util.parse_ipaddr: Don't return tuple on is_ipv6.
util.parse_ipaddr: Don't return tuple on is_ipv6.

This is quite redundant and is also unexpected behaviour when using the
function. The latter bit myself when it comes to the numeric gateway
address, which has been set to the resulting tuple instead of just the
bare numeric address.

Signed-off-by: aszlig <ee1aa092358634f9c53f01b5a783726c9e21b35a@redmoonstudios.org>

RedMoonStudios/hetzner