netlink ifi_change no longer reserved
netlink ifi_change no longer reserved

The documentation (e.g. `man 7 rtnetlink`) states that ifi_change "is reserved for future use and should be always set to 0xFFFFFFFF". This is no longer true, even though the text hasn't been updated.
zig-lang/zig,zig-lang/zig,andrewrk/zig,andrewrk/zig,zig-lang/zig