Asbjørn Sloth Tønnesen [off-list ref] writes:

The attribute WGALLOWEDIP_A_IPADDR can contain either an IPv4
or an IPv6 address depending on WGALLOWEDIP_A_FAMILY, however
in practice it is enough to look at the attribute length.

This patch implements an ipv4-or-v6 display hint, that can
deal with this kind of attribute.

It only implements this display hint for genetlink-legacy, it
can be added to other protocol variants if needed, but we don't
want to encourage it's use.

Signed-off-by: Asbjørn Sloth Tønnesen <redacted>

Reviewed-by: Donald Hunter <donald.hunter@gmail.com>

I suspect there are occurrences of ipv4 or ipv6 in the existing specs
that really should be ipv4-or-ipv6 but the python code doesn't care.