> Hello IPv6:
>
> In RFC 3493 it is said AF_INET6 sockets receive connections from IPv4 nodes,
> mapping their addresses to ::ffff:<IPv4 address>. I think this behaviour is
> on by default. Although it is not explicitly stated, section 5.3 indicates a
> way to turn off this behaviour using the IPv6_V6ONLY socket option.
> I was wondering if you can or can't bind both AF_INET6 and AF_INET sockets
> to the same port at the same time. Is it ok or is it a bind error? If it is
> not an error which socket receives a IPv4 connection? Both? Only one? None?
> In my test lab I can't seam to be able to get Microsoft's O.S. AF_INET6
> sockets to receive connections from IPv4, forcing me to bind 2 sockets, one
> in each protocol. In linux it works fine though, I only nead one socket. I
> have not tested any other O.S. yet. This seams highly contraditory...
the behavior (relationship between AF_INET and AF_INET6 sockets/binds)
is not documented, so there's no standard. sigh.
itojun
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