[ipv4] Should responds also to IPv4 queries

[Kaz Nishimura]

Note: This is an informational issue to explain why it is not implemented.

Since the socket API for IPv4 is not so standardized well as for IPv6, we cannot know from which interface we have received a query in a portable way. Traditional network daemons have coped with this limitation by opening one socket for each interface, but it would complicate the program structure too much, compared to the current single-socket solution.

In addition, Windows currently sends the same query both in IPv4 and in IPv6. It is not necessary to respond to both.

That is why xllmnrd is only for IPv6.

[Kaz Nishimura]

To make this issue visible.

[Kaz Nishimura]

Issue #51 was marked as a duplicate of this issue.