- <literal>net/ipv4/conf/enp3s0.200/forwarding</literal> may be used
- to refer to
- <filename>/proc/sys/net/ipv4/conf/enp3s0.200/forwarding</filename>.
- </para>
-
- <para>Any access permission errors and attempts to write variables not defined on the local system are
- logged, but do not cause the service to fail. Moreover, if a variable assignment is prefixed with a
- single <literal>-</literal> character, failure to set the variable will be logged, but will not cause the
- service to fail. All other errors when setting variables cause the service to return failure at the end
- (other variables are still processed).</para>
-
- <para>The settings configured with <filename>sysctl.d</filename>
- files will be applied early on boot. The network
- interface-specific options will also be applied individually for
- each network interface as it shows up in the system. (More
- specifically, <filename>net.ipv4.conf.*</filename>,
- <filename>net.ipv6.conf.*</filename>,
- <filename>net.ipv4.neigh.*</filename> and
+ <literal>net/ipv4/conf/enp3s0.200/forwarding</literal> may be used to refer to
+ <filename>/proc/sys/net/ipv4/conf/enp3s0.200/forwarding</filename>. A glob
+ <citerefentry project='man-pages'><refentrytitle>glob</refentrytitle><manvolnum>7</manvolnum></citerefentry> pattern may be
+ used to write the same value to all matching keys. Keys for which an explicit pattern exists will be
+ excluded from any glob matching. In addition, a key may be explicitly excluded from being set by any
+ matching glob patterns by specifying the key name prefixed with a <literal>-</literal> character and not
+ followed by <literal>=</literal>, see SYNOPSIS.</para>
+
+ <para>Any access permission errors and attempts to write variables not present on the local system are
+ logged at debug level and do not cause the service to fail. Other types of errors when setting variables
+ are logged with higher priority and cause the service to return failure at the end (after processing
+ other variables). As an exception, if a variable assignment is prefixed with a single
+ <literal>-</literal> character, failure to set the variable for any reason will be logged at debug level
+ and will not cause the service to fail.</para>
+
+ <para>The settings configured with <filename>sysctl.d</filename> files will be applied early on boot. The
+ network interface-specific options will also be applied individually for each network interface as it
+ shows up in the system. (More specifically, <filename>net.ipv4.conf.*</filename>,
+ <filename>net.ipv6.conf.*</filename>, <filename>net.ipv4.neigh.*</filename> and