{ lib } : with lib; { options = { addr = mkOption { type = types.str; description = '' IP address, optionally with a netmask: IPADDR[/MASK] ''; }; brd = mkOption { type = types.nullOr types.str; default = null; description = '' The broadcast address on the interface. ''; }; dev = mkOption { type = types.nullOr types.str; default = null; description = '' The name of the device to add the address to. ''; }; scope = mkOption { type = types.nullOr types.str; default = null; description = '' The scope of the area where this address is valid. ''; }; label = mkOption { type = types.nullOr types.str; default = null; description = '' Each address may be tagged with a label string. In order to preserve compatibility with Linux-2.0 net aliases, this string must coincide with the name of the device or must be prefixed with the device name followed by colon. ''; }; }; }