]>
Commit | Line | Data |
---|---|---|
514094f9 | 1 | <?xml version='1.0'?> |
3a54a157 | 2 | <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" |
12b42c76 | 3 | "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> |
db9ecf05 | 4 | <!-- SPDX-License-Identifier: LGPL-2.1-or-later --> |
1ff28eae TG |
5 | |
6 | <refentry id="systemd.link"> | |
798d3a52 ZJS |
7 | <refentryinfo> |
8 | <title>systemd.link</title> | |
9 | <productname>systemd</productname> | |
798d3a52 | 10 | </refentryinfo> |
1ff28eae | 11 | |
798d3a52 ZJS |
12 | <refmeta> |
13 | <refentrytitle>systemd.link</refentrytitle> | |
14 | <manvolnum>5</manvolnum> | |
15 | </refmeta> | |
1ff28eae | 16 | |
798d3a52 ZJS |
17 | <refnamediv> |
18 | <refname>systemd.link</refname> | |
19 | <refpurpose>Network device configuration</refpurpose> | |
20 | </refnamediv> | |
1ff28eae | 21 | |
798d3a52 ZJS |
22 | <refsynopsisdiv> |
23 | <para><filename><replaceable>link</replaceable>.link</filename></para> | |
24 | </refsynopsisdiv> | |
1ff28eae | 25 | |
798d3a52 ZJS |
26 | <refsect1> |
27 | <title>Description</title> | |
1ff28eae | 28 | |
d4de2b2a | 29 | <para>A plain ini-style text file that encodes configuration for matching network devices, used by |
55cf7779 | 30 | <citerefentry><refentrytitle>systemd-udevd</refentrytitle><manvolnum>8</manvolnum></citerefentry> and in |
d4de2b2a | 31 | particular its <command>net_setup_link</command> builtin. See |
675fa6ea | 32 | <citerefentry><refentrytitle>systemd.syntax</refentrytitle><manvolnum>7</manvolnum></citerefentry> for a |
d4de2b2a | 33 | general description of the syntax.</para> |
1ff28eae | 34 | |
e406e8a2 YW |
35 | <para>The link files are read from the files located in the system network directory |
36 | <filename>/usr/lib/systemd/network</filename>, the volatile runtime network directory | |
37 | <filename>/run/systemd/network</filename>, and the local administration network directory | |
38 | <filename>/etc/systemd/network</filename>. Link files must have the extension | |
39 | <filename>.link</filename>; other extensions are ignored. All link files are collectively sorted | |
40 | and processed in lexical order, regardless of the directories in which they live. However, files | |
41 | with identical filenames replace each other. Files in <filename>/etc/</filename> have the highest | |
42 | priority, files in <filename>/run/</filename> take precedence over files with the same name in | |
43 | <filename>/usr/lib/</filename>. This can be used to override a system-supplied link file with a | |
44 | local file if needed. As a special case, an empty file (file size 0) or symlink with the same name | |
45 | pointing to <filename>/dev/null</filename> disables the configuration file entirely (it is | |
46 | "masked").</para> | |
47 | ||
48 | <para>Along with the link file <filename>foo.link</filename>, a "drop-in" directory | |
49 | <filename>foo.link.d/</filename> may exist. All files with the suffix <literal>.conf</literal> | |
50 | from this directory will be parsed after the file itself is parsed. This is useful to alter or add | |
51 | configuration settings, without having to modify the main configuration file. Each drop-in file | |
52 | must have appropriate section headers.</para> | |
53 | ||
54 | <para>In addition to <filename>/etc/systemd/network</filename>, drop-in <literal>.d</literal> | |
55 | directories can be placed in <filename>/usr/lib/systemd/network</filename> or | |
56 | <filename>/run/systemd/network</filename> directories. Drop-in files in <filename>/etc/</filename> | |
57 | take precedence over those in <filename>/run/</filename> which in turn take precedence over those | |
58 | in <filename>/usr/lib/</filename>. Drop-in files under any of these directories take precedence | |
59 | over the main link file wherever located.</para> | |
1ff28eae | 60 | |
d7dce7b6 ZJS |
61 | <para>The link file contains a [Match] section, which determines if a given link file may be applied to a |
62 | given device, as well as a [Link] section specifying how the device should be configured. The first (in | |
63 | lexical order) of the link files that matches a given device is applied. Note that a default file | |
64 | <filename>99-default.link</filename> is shipped by the system. Any user-supplied | |
65 | <filename>.link</filename> should hence have a lexically earlier name to be considered at all.</para> | |
66 | ||
67 | <para>See <citerefentry><refentrytitle>udevadm</refentrytitle><manvolnum>8</manvolnum></citerefentry> for | |
68 | diagnosing problems with <filename>.link</filename> files.</para> | |
798d3a52 | 69 | </refsect1> |
102bd40e | 70 | |
798d3a52 ZJS |
71 | <refsect1> |
72 | <title>[Match] Section Options</title> | |
1ff28eae | 73 | |
84ea567e | 74 | <para>A link file is said to match a device if all matches specified by the |
bdac5608 ZJS |
75 | [Match] section are satisfied. When a link file does not contain valid settings |
76 | in [Match] section, then the file will match all devices and | |
84ea567e YW |
77 | <command>systemd-udevd</command> warns about that. Hint: to avoid the warning and to make it clear |
78 | that all interfaces shall be matched, add the following: | |
79 | <programlisting>OriginalName=*</programlisting> | |
80 | The following keys are accepted:</para> | |
1ff28eae | 81 | |
798d3a52 | 82 | <variablelist class='network-directives'> |
d9b20454 ZJS |
83 | <!-- This list is reused in systemd.network(3), hence maintain a specific order: |
84 | 1. device matches shared between the two lists | |
85 | 2. non-shared settings | |
86 | 3. host matches shared between the two lists | |
87 | --> | |
88 | ||
89 | <varlistentry id='mac-address'> | |
798d3a52 ZJS |
90 | <term><varname>MACAddress=</varname></term> |
91 | <listitem> | |
9310bf4b YW |
92 | <para>A whitespace-separated list of hardware addresses. Use full colon-, hyphen- or dot-delimited hexadecimal. See the example below. |
93 | This option may appear more than once, in which case the lists are merged. If the empty string is assigned to this option, the list | |
94 | of hardware addresses defined prior to this is reset.</para> | |
95 | ||
96 | <para>Example: | |
97 | <programlisting>MACAddress=01:23:45:67:89:ab 00-11-22-33-44-55 AABB.CCDD.EEFF</programlisting></para> | |
798d3a52 ZJS |
98 | </listitem> |
99 | </varlistentry> | |
d9b20454 ZJS |
100 | |
101 | <varlistentry id='permanent-mac-address'> | |
4bb7cc82 YW |
102 | <term><varname>PermanentMACAddress=</varname></term> |
103 | <listitem> | |
104 | <para>A whitespace-separated list of hardware's permanent addresses. While | |
105 | <varname>MACAddress=</varname> matches the device's current MAC address, this matches the | |
106 | device's permanent MAC address, which may be different from the current one. Use full | |
107 | colon-, hyphen- or dot-delimited hexadecimal. This option may appear more than once, in | |
108 | which case the lists are merged. If the empty string is assigned to this option, the list | |
109 | of hardware addresses defined prior to this is reset.</para> | |
110 | </listitem> | |
111 | </varlistentry> | |
d9b20454 ZJS |
112 | |
113 | <varlistentry id='path'> | |
798d3a52 ZJS |
114 | <term><varname>Path=</varname></term> |
115 | <listitem> | |
5256e00e TG |
116 | <para>A whitespace-separated list of shell-style globs matching |
117 | the persistent path, as exposed by the udev property | |
d7dce7b6 | 118 | <varname>ID_PATH</varname>.</para> |
798d3a52 ZJS |
119 | </listitem> |
120 | </varlistentry> | |
d9b20454 ZJS |
121 | |
122 | <varlistentry id='driver'> | |
798d3a52 ZJS |
123 | <term><varname>Driver=</varname></term> |
124 | <listitem> | |
d7dce7b6 | 125 | <para>A whitespace-separated list of shell-style globs matching the driver currently bound to the |
d9b20454 ZJS |
126 | device, as exposed by the udev property <varname>ID_NET_DRIVER</varname> of its parent device, or |
127 | if that is not set, the driver as exposed by <command>ethtool -i</command> of the device itself. | |
128 | If the list is prefixed with a "!", the test is inverted.</para> | |
798d3a52 ZJS |
129 | </listitem> |
130 | </varlistentry> | |
d9b20454 ZJS |
131 | |
132 | <varlistentry id='type'> | |
798d3a52 ZJS |
133 | <term><varname>Type=</varname></term> |
134 | <listitem> | |
ef62949a YW |
135 | <para>A whitespace-separated list of shell-style globs matching the device type, as exposed by |
136 | <command>networkctl status</command>. If the list is prefixed with a "!", the test is inverted. | |
137 | </para> | |
798d3a52 ZJS |
138 | </listitem> |
139 | </varlistentry> | |
d9b20454 ZJS |
140 | |
141 | <varlistentry id='property'> | |
44005bfb YW |
142 | <term><varname>Property=</varname></term> |
143 | <listitem> | |
144 | <para>A whitespace-separated list of udev property name with its value after a equal | |
145 | (<literal>=</literal>). If multiple properties are specified, the test results are ANDed. | |
146 | If the list is prefixed with a "!", the test is inverted. If a value contains white | |
147 | spaces, then please quote whole key and value pair. If a value contains quotation, then | |
148 | please escape the quotation with <literal>\</literal>.</para> | |
149 | ||
150 | <para>Example: if a .link file has the following: | |
151 | <programlisting>Property=ID_MODEL_ID=9999 "ID_VENDOR_FROM_DATABASE=vendor name" "KEY=with \"quotation\""</programlisting> | |
152 | then, the .link file matches only when an interface has all the above three properties. | |
153 | </para> | |
154 | </listitem> | |
155 | </varlistentry> | |
d9b20454 | 156 | |
798d3a52 | 157 | <varlistentry> |
d9b20454 ZJS |
158 | <term><varname>OriginalName=</varname></term> |
159 | <listitem> | |
160 | <para>A whitespace-separated list of shell-style globs matching the device name, as exposed by the | |
161 | udev property "INTERFACE". This cannot be used to match on names that have already been changed | |
162 | from userspace. Caution is advised when matching on kernel-assigned names, as they are known to be | |
163 | unstable between reboots.</para> | |
164 | </listitem> | |
165 | </varlistentry> | |
166 | ||
167 | <varlistentry id='host'> | |
798d3a52 ZJS |
168 | <term><varname>Host=</varname></term> |
169 | <listitem> | |
d689bbca | 170 | <para>Matches against the hostname or machine ID of the host. See <varname>ConditionHost=</varname> in |
798d3a52 | 171 | <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry> |
d689bbca YW |
172 | for details. When prefixed with an exclamation mark (<literal>!</literal>), the result is negated. |
173 | If an empty string is assigned, then previously assigned value is cleared. | |
174 | </para> | |
798d3a52 ZJS |
175 | </listitem> |
176 | </varlistentry> | |
d9b20454 ZJS |
177 | |
178 | <varlistentry id='virtualization'> | |
798d3a52 ZJS |
179 | <term><varname>Virtualization=</varname></term> |
180 | <listitem> | |
d689bbca YW |
181 | <para>Checks whether the system is executed in a virtualized environment and optionally test |
182 | whether it is a specific implementation. See <varname>ConditionVirtualization=</varname> in | |
798d3a52 | 183 | <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry> |
d689bbca YW |
184 | for details. When prefixed with an exclamation mark (<literal>!</literal>), the result is negated. |
185 | If an empty string is assigned, then previously assigned value is cleared. | |
186 | </para> | |
798d3a52 ZJS |
187 | </listitem> |
188 | </varlistentry> | |
d9b20454 ZJS |
189 | |
190 | <varlistentry id='kernel-command-line'> | |
798d3a52 ZJS |
191 | <term><varname>KernelCommandLine=</varname></term> |
192 | <listitem> | |
d689bbca | 193 | <para>Checks whether a specific kernel command line option is set. See |
d7dce7b6 | 194 | <varname>ConditionKernelCommandLine=</varname> in |
798d3a52 | 195 | <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry> |
d689bbca YW |
196 | for details. When prefixed with an exclamation mark (<literal>!</literal>), the result is negated. |
197 | If an empty string is assigned, then previously assigned value is cleared. | |
198 | </para> | |
199 | </listitem> | |
200 | </varlistentry> | |
d9b20454 ZJS |
201 | |
202 | <varlistentry id='kernel-version'> | |
d689bbca YW |
203 | <term><varname>KernelVersion=</varname></term> |
204 | <listitem> | |
205 | <para>Checks whether the kernel version (as reported by <command>uname -r</command>) matches a certain | |
206 | expression. See <varname>ConditionKernelVersion=</varname> in | |
207 | <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry> for | |
208 | details. When prefixed with an exclamation mark (<literal>!</literal>), the result is negated. | |
209 | If an empty string is assigned, then previously assigned value is cleared. | |
210 | </para> | |
798d3a52 ZJS |
211 | </listitem> |
212 | </varlistentry> | |
d9b20454 ZJS |
213 | |
214 | <varlistentry id='architecture'> | |
798d3a52 ZJS |
215 | <term><varname>Architecture=</varname></term> |
216 | <listitem> | |
d689bbca YW |
217 | <para>Checks whether the system is running on a specific architecture. See |
218 | <varname>ConditionArchitecture=</varname> in | |
798d3a52 | 219 | <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry> |
d689bbca YW |
220 | for details. When prefixed with an exclamation mark (<literal>!</literal>), the result is negated. |
221 | If an empty string is assigned, then previously assigned value is cleared. | |
222 | </para> | |
798d3a52 ZJS |
223 | </listitem> |
224 | </varlistentry> | |
225 | </variablelist> | |
1ff28eae | 226 | |
798d3a52 | 227 | </refsect1> |
102bd40e | 228 | |
798d3a52 ZJS |
229 | <refsect1> |
230 | <title>[Link] Section Options</title> | |
102bd40e | 231 | |
d7dce7b6 | 232 | <para>The [Link] section accepts the following |
798d3a52 | 233 | keys:</para> |
1ff28eae | 234 | |
798d3a52 ZJS |
235 | <variablelist class='network-directives'> |
236 | <varlistentry> | |
237 | <term><varname>Description=</varname></term> | |
238 | <listitem> | |
239 | <para>A description of the device.</para> | |
240 | </listitem> | |
241 | </varlistentry> | |
242 | <varlistentry> | |
243 | <term><varname>Alias=</varname></term> | |
244 | <listitem> | |
d7dce7b6 | 245 | <para>The <varname>ifalias</varname> interface property is set to this value.</para> |
798d3a52 ZJS |
246 | </listitem> |
247 | </varlistentry> | |
248 | <varlistentry> | |
249 | <term><varname>MACAddressPolicy=</varname></term> | |
250 | <listitem> | |
251 | <para>The policy by which the MAC address should be set. The | |
252 | available policies are: | |
253 | </para> | |
1ff28eae | 254 | |
798d3a52 ZJS |
255 | <variablelist> |
256 | <varlistentry> | |
d7dce7b6 | 257 | <term><option>persistent</option></term> |
798d3a52 ZJS |
258 | <listitem> |
259 | <para>If the hardware has a persistent MAC address, as | |
260 | most hardware should, and if it is used by the kernel, | |
261 | nothing is done. Otherwise, a new MAC address is | |
262 | generated which is guaranteed to be the same on every | |
263 | boot for the given machine and the given device, but | |
1c25683e | 264 | which is otherwise random. This feature depends on ID_NET_NAME_* |
a8eaaee7 | 265 | properties to exist for the link. On hardware where these |
b938cb90 | 266 | properties are not set, the generation of a persistent MAC address |
1c25683e | 267 | will fail.</para> |
798d3a52 ZJS |
268 | </listitem> |
269 | </varlistentry> | |
270 | <varlistentry> | |
d7dce7b6 | 271 | <term><option>random</option></term> |
798d3a52 ZJS |
272 | <listitem> |
273 | <para>If the kernel is using a random MAC address, | |
274 | nothing is done. Otherwise, a new address is randomly | |
275 | generated each time the device appears, typically at | |
b938cb90 | 276 | boot. Either way, the random address will have the |
2e229e0c TG |
277 | <literal>unicast</literal> and |
278 | <literal>locally administered</literal> bits set.</para> | |
798d3a52 ZJS |
279 | </listitem> |
280 | </varlistentry> | |
66d3752e | 281 | <varlistentry> |
d7dce7b6 | 282 | <term><option>none</option></term> |
66d3752e | 283 | <listitem> |
6ca4a070 YW |
284 | <para>Keeps the MAC address assigned by the kernel. Or use the MAC address specified in |
285 | <varname>MACAddress=</varname>.</para> | |
66d3752e JK |
286 | </listitem> |
287 | </varlistentry> | |
798d3a52 | 288 | </variablelist> |
6ca4a070 YW |
289 | |
290 | <para>An empty string assignment is equivalent to setting <literal>none</literal>.</para> | |
798d3a52 ZJS |
291 | </listitem> |
292 | </varlistentry> | |
293 | <varlistentry> | |
294 | <term><varname>MACAddress=</varname></term> | |
295 | <listitem> | |
6ca4a070 YW |
296 | <para>The interface MAC address to use. For this setting to take effect, |
297 | <varname>MACAddressPolicy=</varname> must either be unset, empty, or <literal>none</literal>. | |
298 | </para> | |
798d3a52 ZJS |
299 | </listitem> |
300 | </varlistentry> | |
301 | <varlistentry> | |
302 | <term><varname>NamePolicy=</varname></term> | |
303 | <listitem> | |
3907446f | 304 | <para>An ordered, space-separated list of policies by which the interface name should be set. |
d7dce7b6 | 305 | <varname>NamePolicy=</varname> may be disabled by specifying <option>net.ifnames=0</option> on the |
58576937 | 306 | kernel command line. Each of the policies may fail, and the first successful one is used. The name |
d7dce7b6 | 307 | is not set directly, but is exported to udev as the property <option>ID_NET_NAME</option>, which |
58576937 ZJS |
308 | is, by default, used by a |
309 | <citerefentry><refentrytitle>udev</refentrytitle><manvolnum>7</manvolnum></citerefentry>, | |
310 | rule to set <varname>NAME</varname>. The available policies are: | |
3907446f | 311 | </para> |
1ff28eae | 312 | |
798d3a52 ZJS |
313 | <variablelist> |
314 | <varlistentry> | |
d7dce7b6 | 315 | <term><option>kernel</option></term> |
798d3a52 ZJS |
316 | <listitem> |
317 | <para>If the kernel claims that the name it has set | |
318 | for a device is predictable, then no renaming is | |
319 | performed.</para> | |
320 | </listitem> | |
321 | </varlistentry> | |
322 | <varlistentry> | |
d7dce7b6 | 323 | <term><option>database</option></term> |
798d3a52 ZJS |
324 | <listitem> |
325 | <para>The name is set based on entries in the udev's | |
326 | Hardware Database with the key | |
d7dce7b6 | 327 | <varname>ID_NET_NAME_FROM_DATABASE</varname>. |
798d3a52 ZJS |
328 | </para> |
329 | </listitem> | |
330 | </varlistentry> | |
331 | <varlistentry> | |
d7dce7b6 | 332 | <term><option>onboard</option></term> |
798d3a52 ZJS |
333 | <listitem> |
334 | <para>The name is set based on information given by | |
335 | the firmware for on-board devices, as exported by the | |
d7dce7b6 | 336 | udev property <varname>ID_NET_NAME_ONBOARD</varname>. |
0b1e5b6e | 337 | See <citerefentry><refentrytitle>systemd.net-naming-scheme</refentrytitle><manvolnum>7</manvolnum></citerefentry>. |
798d3a52 ZJS |
338 | </para> |
339 | </listitem> | |
340 | </varlistentry> | |
341 | <varlistentry> | |
d7dce7b6 | 342 | <term><option>slot</option></term> |
798d3a52 ZJS |
343 | <listitem> |
344 | <para>The name is set based on information given by | |
345 | the firmware for hot-plug devices, as exported by the | |
d7dce7b6 | 346 | udev property <varname>ID_NET_NAME_SLOT</varname>. |
0b1e5b6e | 347 | See <citerefentry><refentrytitle>systemd.net-naming-scheme</refentrytitle><manvolnum>7</manvolnum></citerefentry>. |
798d3a52 ZJS |
348 | </para> |
349 | </listitem> | |
350 | </varlistentry> | |
351 | <varlistentry> | |
d7dce7b6 | 352 | <term><option>path</option></term> |
798d3a52 ZJS |
353 | <listitem> |
354 | <para>The name is set based on the device's physical | |
355 | location, as exported by the udev property | |
0b1e5b6e ZJS |
356 | <varname>ID_NET_NAME_PATH</varname>. |
357 | See <citerefentry><refentrytitle>systemd.net-naming-scheme</refentrytitle><manvolnum>7</manvolnum></citerefentry>. | |
358 | </para> | |
798d3a52 ZJS |
359 | </listitem> |
360 | </varlistentry> | |
361 | <varlistentry> | |
d7dce7b6 | 362 | <term><option>mac</option></term> |
798d3a52 ZJS |
363 | <listitem> |
364 | <para>The name is set based on the device's persistent | |
365 | MAC address, as exported by the udev property | |
0b1e5b6e ZJS |
366 | <varname>ID_NET_NAME_MAC</varname>. |
367 | See <citerefentry><refentrytitle>systemd.net-naming-scheme</refentrytitle><manvolnum>7</manvolnum></citerefentry>. | |
368 | </para> | |
798d3a52 ZJS |
369 | </listitem> |
370 | </varlistentry> | |
3907446f | 371 | <varlistentry> |
d7dce7b6 | 372 | <term><option>keep</option></term> |
3907446f ZJS |
373 | <listitem> |
374 | <para>If the device already had a name given by userspace (as part of creation of the device | |
375 | or a rename), keep it.</para> | |
798d3a52 ZJS |
376 | </listitem> |
377 | </varlistentry> | |
378 | </variablelist> | |
379 | </listitem> | |
380 | </varlistentry> | |
381 | <varlistentry> | |
382 | <term><varname>Name=</varname></term> | |
383 | <listitem> | |
58576937 ZJS |
384 | <para>The interface name to use. This option has lower precedence than |
385 | <varname>NamePolicy=</varname>, so for this setting to take effect, <varname>NamePolicy=</varname> | |
386 | must either be unset, empty, disabled, or all policies configured there must fail. Also see the | |
387 | example below with <literal>Name=dmz0</literal>.</para> | |
1b934761 ZJS |
388 | |
389 | <para>Note that specifying a name that the kernel might use for another | |
390 | interface (for example <literal>eth0</literal>) is dangerous because the | |
391 | name assignment done by udev will race with the assignment done by the | |
392 | kernel, and only one interface may use the name. Depending on the order of | |
393 | operations, either udev or the kernel will win, making the naming | |
394 | unpredictable. It is best to use some different prefix, for example | |
395 | <literal>internal0</literal>/<literal>external0</literal> or | |
396 | <literal>lan0</literal>/<literal>lan1</literal>/<literal>lan3</literal>. | |
397 | </para> | |
798d3a52 ZJS |
398 | </listitem> |
399 | </varlistentry> | |
ef1d2c07 YW |
400 | <varlistentry> |
401 | <term><varname>AlternativeNamesPolicy=</varname></term> | |
402 | <listitem> | |
403 | <para>A space-separated list of policies by which the interface's alternative names | |
404 | should be set. Each of the policies may fail, and all successful policies are used. The | |
405 | available policies are <literal>database</literal>, <literal>onboard</literal>, | |
406 | <literal>slot</literal>, <literal>path</literal>, and <literal>mac</literal>. If the | |
407 | kernel does not support the alternative names, then this setting will be ignored. | |
408 | </para> | |
409 | </listitem> | |
410 | </varlistentry> | |
a5053a15 YW |
411 | <varlistentry> |
412 | <term><varname>AlternativeName=</varname></term> | |
413 | <listitem> | |
414 | <para>The alternative interface name to use. This option can be specified multiple times. | |
415 | If the empty string is assigned to this option, the list is reset, and all prior assignments | |
bb181dd4 YW |
416 | have no effect. If the kernel does not support the alternative names, then this setting will |
417 | be ignored.</para> | |
a5053a15 YW |
418 | </listitem> |
419 | </varlistentry> | |
face9fcc YW |
420 | <varlistentry> |
421 | <term><varname>TransmitQueues=</varname></term> | |
422 | <listitem> | |
423 | <para>Specifies the device's number of transmit queues. An integer in the range 1…4096. | |
424 | When unset, the kernel's default will be used.</para> | |
425 | </listitem> | |
426 | </varlistentry> | |
427 | <varlistentry> | |
428 | <term><varname>ReceiveQueues=</varname></term> | |
429 | <listitem> | |
430 | <para>Specifies the device's number of receive queues. An integer in the range 1…4096. | |
431 | When unset, the kernel's default will be used.</para> | |
432 | </listitem> | |
433 | </varlistentry> | |
ef4a91a7 | 434 | <varlistentry> |
1f8dc96c | 435 | <term><varname>TransmitQueueLength=</varname></term> |
ef4a91a7 UÖ |
436 | <listitem> |
437 | <para>Specifies the transmit queue length of the device in number of packets. An unsigned integer | |
1d3a473b | 438 | in the range 0…4294967294. When unset, the kernel's default will be used.</para> |
ef4a91a7 UÖ |
439 | </listitem> |
440 | </varlistentry> | |
798d3a52 ZJS |
441 | <varlistentry> |
442 | <term><varname>MTUBytes=</varname></term> | |
443 | <listitem> | |
444 | <para>The maximum transmission unit in bytes to set for the | |
445 | device. The usual suffixes K, M, G, are supported and are | |
446 | understood to the base of 1024.</para> | |
447 | </listitem> | |
448 | </varlistentry> | |
449 | <varlistentry> | |
450 | <term><varname>BitsPerSecond=</varname></term> | |
451 | <listitem> | |
452 | <para>The speed to set for the device, the value is rounded | |
453 | down to the nearest Mbps. The usual suffixes K, M, G, are | |
454 | supported and are understood to the base of 1000.</para> | |
455 | </listitem> | |
456 | </varlistentry> | |
457 | <varlistentry> | |
458 | <term><varname>Duplex=</varname></term> | |
459 | <listitem> | |
d7dce7b6 ZJS |
460 | <para>The duplex mode to set for the device. The accepted values are <option>half</option> and |
461 | <option>full</option>.</para> | |
798d3a52 ZJS |
462 | </listitem> |
463 | </varlistentry> | |
a39f92d3 SS |
464 | <varlistentry> |
465 | <term><varname>AutoNegotiation=</varname></term> | |
466 | <listitem> | |
9b6ffef3 | 467 | <para>Takes a boolean. If set to yes, automatic negotiation of transmission parameters is enabled. |
a39f92d3 SS |
468 | Autonegotiation is a procedure by which two connected ethernet devices choose |
469 | common transmission parameters, such as speed, duplex mode, and flow control. | |
9b6ffef3 | 470 | When unset, the kernel's default will be used.</para> |
a39f92d3 | 471 | |
a0e1ad10 | 472 | <para>Note that if autonegotiation is enabled, speed and duplex settings are |
11fcfc53 | 473 | read-only. If autonegotiation is disabled, speed and duplex settings are writable |
a39f92d3 SS |
474 | if the driver supports multiple link modes.</para> |
475 | </listitem> | |
476 | </varlistentry> | |
798d3a52 ZJS |
477 | <varlistentry> |
478 | <term><varname>WakeOnLan=</varname></term> | |
479 | <listitem> | |
480 | <para>The Wake-on-LAN policy to set for the device. The | |
481 | supported values are:</para> | |
1ff28eae | 482 | |
798d3a52 ZJS |
483 | <variablelist> |
484 | <varlistentry> | |
d7dce7b6 | 485 | <term><option>phy</option></term> |
798d3a52 ZJS |
486 | <listitem> |
487 | <para>Wake on PHY activity.</para> | |
488 | </listitem> | |
489 | </varlistentry> | |
617da14c | 490 | <varlistentry> |
d7dce7b6 | 491 | <term><option>unicast</option></term> |
617da14c SS |
492 | <listitem> |
493 | <para>Wake on unicast messages.</para> | |
494 | </listitem> | |
495 | </varlistentry> | |
496 | <varlistentry> | |
d7dce7b6 | 497 | <term><option>multicast</option></term> |
617da14c SS |
498 | <listitem> |
499 | <para>Wake on multicast messages.</para> | |
500 | </listitem> | |
501 | </varlistentry> | |
502 | <varlistentry> | |
d7dce7b6 | 503 | <term><option>broadcast</option></term> |
617da14c SS |
504 | <listitem> |
505 | <para>Wake on broadcast messages.</para> | |
506 | </listitem> | |
507 | </varlistentry> | |
508 | <varlistentry> | |
d7dce7b6 | 509 | <term><option>arp</option></term> |
617da14c SS |
510 | <listitem> |
511 | <para>Wake on ARP.</para> | |
512 | </listitem> | |
513 | </varlistentry> | |
798d3a52 | 514 | <varlistentry> |
d7dce7b6 | 515 | <term><option>magic</option></term> |
798d3a52 ZJS |
516 | <listitem> |
517 | <para>Wake on receipt of a magic packet. | |
518 | </para> | |
519 | </listitem> | |
520 | </varlistentry> | |
617da14c | 521 | <varlistentry> |
d7dce7b6 | 522 | <term><option>secureon</option></term> |
617da14c SS |
523 | <listitem> |
524 | <para>Enable secureon(tm) password for MagicPacket(tm). | |
525 | </para> | |
526 | </listitem> | |
527 | </varlistentry> | |
798d3a52 | 528 | <varlistentry> |
d7dce7b6 | 529 | <term><option>off</option></term> |
798d3a52 ZJS |
530 | <listitem> |
531 | <para>Never wake.</para> | |
532 | </listitem> | |
533 | </varlistentry> | |
534 | </variablelist> | |
c605bd00 | 535 | |
d7dce7b6 | 536 | <para>Defaults to <option>off</option>.</para> |
798d3a52 ZJS |
537 | </listitem> |
538 | </varlistentry> | |
593022fa SS |
539 | <varlistentry> |
540 | <term><varname>Port=</varname></term> | |
541 | <listitem> | |
542 | <para>The port option is used to select the device port. The | |
543 | supported values are:</para> | |
544 | ||
545 | <variablelist> | |
546 | <varlistentry> | |
d7dce7b6 | 547 | <term><option>tp</option></term> |
593022fa SS |
548 | <listitem> |
549 | <para>An Ethernet interface using Twisted-Pair cable as the medium.</para> | |
550 | </listitem> | |
551 | </varlistentry> | |
552 | <varlistentry> | |
d7dce7b6 | 553 | <term><option>aui</option></term> |
593022fa SS |
554 | <listitem> |
555 | <para>Attachment Unit Interface (AUI). Normally used with hubs. | |
556 | </para> | |
557 | </listitem> | |
558 | </varlistentry> | |
559 | <varlistentry> | |
d7dce7b6 | 560 | <term><option>bnc</option></term> |
593022fa SS |
561 | <listitem> |
562 | <para>An Ethernet interface using BNC connectors and co-axial cable.</para> | |
563 | </listitem> | |
564 | </varlistentry> | |
565 | <varlistentry> | |
d7dce7b6 | 566 | <term><option>mii</option></term> |
593022fa SS |
567 | <listitem> |
568 | <para>An Ethernet interface using a Media Independent Interface (MII).</para> | |
569 | </listitem> | |
570 | </varlistentry> | |
571 | <varlistentry> | |
d7dce7b6 | 572 | <term><option>fibre</option></term> |
593022fa SS |
573 | <listitem> |
574 | <para>An Ethernet interface using Optical Fibre as the medium.</para> | |
575 | </listitem> | |
576 | </varlistentry> | |
577 | </variablelist> | |
578 | </listitem> | |
579 | </varlistentry> | |
6cf0a204 SS |
580 | <varlistentry> |
581 | <term><varname>Advertise=</varname></term> | |
582 | <listitem> | |
583 | <para>This sets what speeds and duplex modes of operation are advertised for auto-negotiation. | |
a0e1ad10 | 584 | This implies <literal>AutoNegotiation=yes</literal>. The supported values are: |
6cf0a204 SS |
585 | |
586 | <table> | |
587 | <title>Supported advertise values</title> | |
588 | <tgroup cols='3'> | |
589 | <colspec colname='Advertise' /> | |
590 | <colspec colname='Speed' /> | |
591 | <colspec colname='Duplex Mode' /> | |
592 | ||
593 | <thead><row> | |
594 | <entry>Advertise</entry> | |
595 | <entry>Speed (Mbps)</entry> | |
596 | <entry>Duplex Mode</entry> | |
597 | </row></thead> | |
598 | <tbody> | |
d7dce7b6 | 599 | <row><entry><option>10baset-half</option></entry> |
6cf0a204 SS |
600 | <entry>10</entry><entry>half</entry></row> |
601 | ||
d7dce7b6 | 602 | <row><entry><option>10baset-full</option></entry> |
6cf0a204 SS |
603 | <entry>10</entry><entry>full</entry></row> |
604 | ||
d7dce7b6 | 605 | <row><entry><option>100baset-half</option></entry> |
6cf0a204 SS |
606 | <entry>100</entry><entry>half</entry></row> |
607 | ||
d7dce7b6 | 608 | <row><entry><option>100baset-full</option></entry> |
6cf0a204 SS |
609 | <entry>100</entry><entry>full</entry></row> |
610 | ||
d7dce7b6 | 611 | <row><entry><option>1000baset-half</option></entry> |
6cf0a204 SS |
612 | <entry>1000</entry><entry>half</entry></row> |
613 | ||
d7dce7b6 | 614 | <row><entry><option>1000baset-full</option></entry> |
6cf0a204 SS |
615 | <entry>1000</entry><entry>full</entry></row> |
616 | ||
d7dce7b6 | 617 | <row><entry><option>10000baset-full</option></entry> |
6cf0a204 SS |
618 | <entry>10000</entry><entry>full</entry></row> |
619 | ||
d7dce7b6 | 620 | <row><entry><option>2500basex-full</option></entry> |
6cf0a204 SS |
621 | <entry>2500</entry><entry>full</entry></row> |
622 | ||
d7dce7b6 | 623 | <row><entry><option>1000basekx-full</option></entry> |
6cf0a204 SS |
624 | <entry>1000</entry><entry>full</entry></row> |
625 | ||
d7dce7b6 | 626 | <row><entry><option>10000basekx4-full</option></entry> |
6cf0a204 SS |
627 | <entry>10000</entry><entry>full</entry></row> |
628 | ||
d7dce7b6 | 629 | <row><entry><option>10000basekr-full</option></entry> |
6cf0a204 SS |
630 | <entry>10000</entry><entry>full</entry></row> |
631 | ||
d7dce7b6 | 632 | <row><entry><option>10000baser-fec</option></entry> |
6cf0a204 SS |
633 | <entry>10000</entry><entry>full</entry></row> |
634 | ||
d7dce7b6 | 635 | <row><entry><option>20000basemld2-full</option></entry> |
6cf0a204 SS |
636 | <entry>20000</entry><entry>full</entry></row> |
637 | ||
d7dce7b6 | 638 | <row><entry><option>20000basekr2-full</option></entry> |
6cf0a204 SS |
639 | <entry>20000</entry><entry>full</entry></row> |
640 | </tbody> | |
641 | </tgroup> | |
642 | </table> | |
643 | ||
644 | By default this is unset, i.e. all possible modes will be advertised. | |
645 | This option may be specified more than once, in which case all specified speeds and modes are advertised. | |
646 | If the empty string is assigned to this option, the list is reset, and all prior assignments have no effect. | |
647 | </para> | |
648 | </listitem> | |
649 | </varlistentry> | |
bf2334c0 YW |
650 | <varlistentry> |
651 | <term><varname>ReceiveChecksumOffload=</varname></term> | |
652 | <listitem> | |
653 | <para>Takes a boolean. If set to true, the hardware offload for checksumming of ingress | |
654 | network packets is enabled. When unset, the kernel's default will be used.</para> | |
655 | </listitem> | |
656 | </varlistentry> | |
657 | <varlistentry> | |
658 | <term><varname>TransmitChecksumOffload=</varname></term> | |
659 | <listitem> | |
660 | <para>Takes a boolean. If set to true, the hardware offload for checksumming of egress | |
661 | network packets is enabled. When unset, the kernel's default will be used.</para> | |
662 | </listitem> | |
663 | </varlistentry> | |
50725d10 SS |
664 | <varlistentry> |
665 | <term><varname>TCPSegmentationOffload=</varname></term> | |
666 | <listitem> | |
9b6ffef3 | 667 | <para>Takes a boolean. If set to true, the TCP Segmentation Offload (TSO) is enabled. |
025314d9 | 668 | When unset, the kernel's default will be used.</para> |
50725d10 | 669 | </listitem> |
ffa69a04 SS |
670 | </varlistentry> |
671 | <varlistentry> | |
672 | <term><varname>TCP6SegmentationOffload=</varname></term> | |
673 | <listitem> | |
9b6ffef3 | 674 | <para>Takes a boolean. If set to true, the TCP6 Segmentation Offload (tx-tcp6-segmentation) is enabled. |
025314d9 | 675 | When unset, the kernel's default will be used.</para> |
ffa69a04 | 676 | </listitem> |
50725d10 SS |
677 | </varlistentry> |
678 | <varlistentry> | |
679 | <term><varname>GenericSegmentationOffload=</varname></term> | |
680 | <listitem> | |
9b6ffef3 | 681 | <para>Takes a boolean. If set to true, the Generic Segmentation Offload (GSO) is enabled. |
025314d9 | 682 | When unset, the kernel's default will be used.</para> |
50725d10 SS |
683 | </listitem> |
684 | </varlistentry> | |
bf2334c0 | 685 | <varlistentry> |
f7ea90fb SS |
686 | <term><varname>GenericReceiveOffload=</varname></term> |
687 | <listitem> | |
9b6ffef3 | 688 | <para>Takes a boolean. If set to true, the Generic Receive Offload (GRO) is enabled. |
025314d9 | 689 | When unset, the kernel's default will be used.</para> |
f7ea90fb SS |
690 | </listitem> |
691 | </varlistentry> | |
692 | <varlistentry> | |
693 | <term><varname>LargeReceiveOffload=</varname></term> | |
694 | <listitem> | |
9b6ffef3 | 695 | <para>Takes a boolean. If set to true, the Large Receive Offload (LRO) is enabled. |
025314d9 | 696 | When unset, the kernel's default will be used.</para> |
f7ea90fb SS |
697 | </listitem> |
698 | </varlistentry> | |
5f945202 SS |
699 | <varlistentry> |
700 | <term><varname>RxChannels=</varname></term> | |
701 | <listitem> | |
702 | <para>Sets the number of receive channels (a number between 1 and 4294967295) .</para> | |
703 | </listitem> | |
704 | </varlistentry> | |
705 | <varlistentry> | |
706 | <term><varname>TxChannels=</varname></term> | |
707 | <listitem> | |
708 | <para>Sets the number of transmit channels (a number between 1 and 4294967295).</para> | |
709 | </listitem> | |
710 | </varlistentry> | |
711 | <varlistentry> | |
712 | <term><varname>OtherChannels=</varname></term> | |
713 | <listitem> | |
714 | <para>Sets the number of other channels (a number between 1 and 4294967295).</para> | |
715 | </listitem> | |
716 | </varlistentry> | |
717 | <varlistentry> | |
718 | <term><varname>CombinedChannels=</varname></term> | |
719 | <listitem> | |
720 | <para>Sets the number of combined set channels (a number between 1 and 4294967295).</para> | |
721 | </listitem> | |
722 | </varlistentry> | |
224ded67 SS |
723 | <varlistentry> |
724 | <term><varname>RxBufferSize=</varname></term> | |
725 | <listitem> | |
80af9bda | 726 | <para>Takes an integer. Specifies the maximum number of pending packets in the NIC receive buffer. |
727 | When unset, the kernel's default will be used.</para> | |
224ded67 SS |
728 | </listitem> |
729 | </varlistentry> | |
e81f5fc4 | 730 | <varlistentry> |
731 | <term><varname>RxMiniBufferSize=</varname></term> | |
732 | <listitem> | |
733 | <para>Takes an integer. Specifies the maximum number of pending packets in the NIC mini receive buffer. | |
734 | When unset, the kernel's default will be used.</para> | |
735 | </listitem> | |
736 | </varlistentry> | |
737 | <varlistentry> | |
738 | <term><varname>RxJumboBufferSize=</varname></term> | |
739 | <listitem> | |
740 | <para>Takes an integer. Specifies the maximum number of pending packets in the NIC jumbo receive buffer. | |
741 | When unset, the kernel's default will be used.</para> | |
742 | </listitem> | |
743 | </varlistentry> | |
224ded67 SS |
744 | <varlistentry> |
745 | <term><varname>TxBufferSize=</varname></term> | |
746 | <listitem> | |
80af9bda | 747 | <para>Takes an integer. Specifies the maximum number of pending packets in the NIC transmit buffer. |
748 | When unset, the kernel's default will be used.</para> | |
224ded67 SS |
749 | </listitem> |
750 | </varlistentry> | |
a34811e4 YW |
751 | <varlistentry> |
752 | <term><varname>RxFlowControl=</varname></term> | |
753 | <listitem> | |
754 | <para>Takes a boolean. When set, enables the receive flow control, also known as the ethernet | |
755 | receive PAUSE message (generate and send ethernet PAUSE frames). When unset, the kernel's | |
756 | default will be used.</para> | |
757 | </listitem> | |
758 | </varlistentry> | |
759 | <varlistentry> | |
760 | <term><varname>TxFlowControl=</varname></term> | |
761 | <listitem> | |
762 | <para>Takes a boolean. When set, enables the transmit flow control, also known as the ethernet | |
763 | transmit PAUSE message (respond to received ethernet PAUSE frames). When unset, the kernel's | |
764 | default will be used.</para> | |
765 | </listitem> | |
766 | </varlistentry> | |
767 | <varlistentry> | |
768 | <term><varname>AutoNegotiationFlowControl=</varname></term> | |
769 | <listitem> | |
770 | <para>Takes a boolean. When set, the auto negotiation enables the interface to exchange state | |
771 | advertisements with the connected peer so that the two devices can agree on the ethernet | |
772 | PAUSE configuration. When unset, the kernel's default will be used.</para> | |
773 | </listitem> | |
774 | </varlistentry> | |
1e270127 SS |
775 | <varlistentry> |
776 | <term><varname>GenericSegmentOffloadMaxBytes=</varname></term> | |
777 | <listitem> | |
778 | <para>Specifies the maximum size of a Generic Segment Offload (GSO) packet the | |
779 | device should accept. The usual suffixes K, M, G, are supported and are | |
1d3a473b | 780 | understood to the base of 1024. An unsigned integer in the range 1…65536. |
1e270127 SS |
781 | Defaults to unset.</para> |
782 | </listitem> | |
783 | </varlistentry> | |
784 | <varlistentry> | |
785 | <term><varname>GenericSegmentOffloadMaxSegments=</varname></term> | |
786 | <listitem> | |
1d3a473b ZJS |
787 | <para>Specifies the maximum number of a Generic Segment Offload (GSO) segments the device should |
788 | accept. An unsigned integer in the range 1…65535. Defaults to unset.</para> | |
1e270127 SS |
789 | </listitem> |
790 | </varlistentry> | |
224ded67 | 791 | |
798d3a52 ZJS |
792 | </variablelist> |
793 | </refsect1> | |
1ff28eae | 794 | |
798d3a52 | 795 | <refsect1> |
b97e7fab LP |
796 | <title>Examples</title> |
797 | ||
798 | <example> | |
799 | <title>/usr/lib/systemd/network/99-default.link</title> | |
800 | ||
801 | <para>The link file <filename>99-default.link</filename> that is | |
802 | shipped with systemd defines the default naming policy for | |
803 | links.</para> | |
804 | ||
805 | <programlisting>[Link] | |
806 | NamePolicy=kernel database onboard slot path | |
807 | MACAddressPolicy=persistent</programlisting> | |
808 | </example> | |
809 | ||
810 | <example> | |
811 | <title>/etc/systemd/network/10-dmz.link</title> | |
812 | ||
58576937 | 813 | <para>This example assigns the fixed name <literal>dmz0</literal> to the interface with the MAC address |
b97e7fab LP |
814 | 00:a0:de:63:7a:e6:</para> |
815 | ||
816 | <programlisting>[Match] | |
817 | MACAddress=00:a0:de:63:7a:e6 | |
818 | ||
819 | [Link] | |
820 | Name=dmz0</programlisting> | |
58576937 | 821 | |
7a447d21 | 822 | <para><varname>NamePolicy=</varname> is not set, so <varname>Name=</varname> takes effect. We use the |
a19b9a38 | 823 | <literal>10-</literal> prefix to order this file early in the list. Note that it needs to be before |
7a447d21 ZJS |
824 | <literal>99-link</literal>, i.e. it needs a numerical prefix, to have any effect at all.</para> |
825 | </example> | |
826 | ||
827 | <example> | |
828 | <title>Debugging <varname>NamePolicy=</varname> assignments</title> | |
829 | ||
830 | <programlisting>$ sudo SYSTEMD_LOG_LEVEL=debug udevadm test-builtin net_setup_link /sys/class/net/hub0 | |
831 | … | |
832 | Parsed configuration file /usr/lib/systemd/network/99-default.link | |
833 | Parsed configuration file /etc/systemd/network/10-eth0.link | |
834 | ID_NET_DRIVER=cdc_ether | |
835 | Config file /etc/systemd/network/10-eth0.link applies to device hub0 | |
836 | link_config: autonegotiation is unset or enabled, the speed and duplex are not writable. | |
837 | hub0: Device has name_assign_type=4 | |
838 | Using default interface naming scheme 'v240'. | |
839 | hub0: Policies didn't yield a name, using specified Name=hub0. | |
840 | ID_NET_LINK_FILE=/etc/systemd/network/10-eth0.link | |
841 | ID_NET_NAME=hub0 | |
842 | …</programlisting> | |
843 | ||
844 | <para>Explicit <varname>Name=</varname> configuration wins in this case.</para> | |
845 | ||
846 | <programlisting>sudo SYSTEMD_LOG_LEVEL=debug udevadm test-builtin net_setup_link /sys/class/net/enp0s31f6 | |
847 | … | |
848 | Parsed configuration file /usr/lib/systemd/network/99-default.link | |
849 | Parsed configuration file /etc/systemd/network/10-eth0.link | |
850 | Created link configuration context. | |
851 | ID_NET_DRIVER=e1000e | |
852 | Config file /usr/lib/systemd/network/99-default.link applies to device enp0s31f6 | |
853 | link_config: autonegotiation is unset or enabled, the speed and duplex are not writable. | |
854 | enp0s31f6: Device has name_assign_type=4 | |
855 | Using default interface naming scheme 'v240'. | |
856 | enp0s31f6: Policy *keep*: keeping existing userspace name | |
857 | enp0s31f6: Device has addr_assign_type=0 | |
858 | enp0s31f6: MAC on the device already matches policy *persistent* | |
859 | ID_NET_LINK_FILE=/usr/lib/systemd/network/99-default.link | |
860 | … | |
861 | </programlisting> | |
862 | ||
863 | <para>In this case, the interface was already renamed, so the <option>keep</option> policy specified as | |
b0343f8c | 864 | the first option in <filename index="false">99-default.link</filename> means that the existing name is |
7a447d21 ZJS |
865 | preserved. If <option>keep</option> was removed, or if were in boot before the renaming has happened, |
866 | we might get the following instead:</para> | |
867 | ||
868 | <programlisting>enp0s31f6: Policy *path* yields "enp0s31f6". | |
869 | enp0s31f6: Device has addr_assign_type=0 | |
870 | enp0s31f6: MAC on the device already matches policy *persistent* | |
871 | ID_NET_LINK_FILE=/usr/lib/systemd/network/99-default.link | |
872 | ID_NET_NAME=enp0s31f6 | |
873 | … | |
874 | </programlisting> | |
875 | ||
876 | <para>Please note that the details of output are subject to change.</para> | |
b97e7fab LP |
877 | </example> |
878 | ||
879 | <example> | |
880 | <title>/etc/systemd/network/10-internet.link</title> | |
881 | ||
882 | <para>This example assigns the fixed name | |
883 | <literal>internet0</literal> to the interface with the device | |
884 | path <literal>pci-0000:00:1a.0-*</literal>:</para> | |
885 | ||
886 | <programlisting>[Match] | |
887 | Path=pci-0000:00:1a.0-* | |
888 | ||
889 | [Link] | |
890 | Name=internet0</programlisting> | |
891 | </example> | |
892 | ||
798d3a52 | 893 | <example> |
6c1695be | 894 | <title>/etc/systemd/network/25-wireless.link</title> |
1ff28eae | 895 | |
b97e7fab LP |
896 | <para>Here's an overly complex example that shows the use of a large number of [Match] and [Link] settings.</para> |
897 | ||
798d3a52 | 898 | <programlisting>[Match] |
7abaad1a | 899 | MACAddress=12:34:56:78:9a:bc |
900 | Driver=brcmsmac | |
901 | Path=pci-0000:02:00.0-* | |
902 | Type=wlan | |
903 | Virtualization=no | |
904 | Host=my-laptop | |
905 | Architecture=x86-64 | |
1ff28eae | 906 | |
7abaad1a | 907 | [Link] |
908 | Name=wireless0 | |
909 | MTUBytes=1450 | |
910 | BitsPerSecond=10M | |
911 | WakeOnLan=magic | |
912 | MACAddress=cb:a9:87:65:43:21</programlisting> | |
798d3a52 ZJS |
913 | </example> |
914 | </refsect1> | |
1ff28eae | 915 | |
798d3a52 ZJS |
916 | <refsect1> |
917 | <title>See Also</title> | |
918 | <para> | |
919 | <citerefentry> | |
920 | <refentrytitle>systemd-udevd.service</refentrytitle><manvolnum>8</manvolnum> | |
921 | </citerefentry>, | |
922 | <citerefentry> | |
923 | <refentrytitle>udevadm</refentrytitle><manvolnum>8</manvolnum> | |
924 | </citerefentry>, | |
925 | <citerefentry> | |
926 | <refentrytitle>systemd.netdev</refentrytitle><manvolnum>5</manvolnum> | |
927 | </citerefentry>, | |
928 | <citerefentry> | |
929 | <refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum> | |
930 | </citerefentry> | |
931 | </para> | |
932 | </refsect1> | |
1ff28eae TG |
933 | |
934 | </refentry> |