From: Yu Watanabe Date: Wed, 20 Feb 2019 10:01:49 +0000 (+0900) Subject: man: mention limit about prefix length when null address is specified to Address= X-Git-Tag: v242-rc1~209^2~7 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=e6ef3a130f04c0aff32471c16238ae927bfb13db;p=thirdparty%2Fsystemd.git man: mention limit about prefix length when null address is specified to Address= --- diff --git a/man/systemd.network.xml b/man/systemd.network.xml index 8b6c187f346..e354e485162 100644 --- a/man/systemd.network.xml +++ b/man/systemd.network.xml @@ -479,18 +479,14 @@ specified more than once. - If the specified address is 0.0.0.0 (for IPv4) or - [::] (for IPv6), a new address range of the requested size - is automatically allocated from a system-wide pool of - unused ranges. The allocated range is checked against all - current network interfaces and all known network - configuration files to avoid address range conflicts. The - default system-wide pool consists of 192.168.0.0/16, - 172.16.0.0/12 and 10.0.0.0/8 for IPv4, and fc00::/7 for - IPv6. This functionality is useful to manage a large - number of dynamically created network interfaces with the - same network configuration and automatic address range - assignment. + If the specified address is 0.0.0.0 (for IPv4) or :: + (for IPv6), a new address range of the requested size is automatically allocated from a + system-wide pool of unused ranges. Note that the prefix length must be equal or larger than 8 for + IPv4, and 64 for IPv6. The allocated range is checked against all current network interfaces and + all known network configuration files to avoid address range conflicts. The default system-wide + pool consists of 192.168.0.0/16, 172.16.0.0/12 and 10.0.0.0/8 for IPv4, and fd00::/8 for IPv6. + This functionality is useful to manage a large number of dynamically created network interfaces + with the same network configuration and automatic address range assignment.