Spurious warnings about unsupported address family

[rainer]

As reported by Neil Silverman, he experiences spurious error messages as follows:

ERROR : [2011-03-03T21:33:40+0000] msg=<Address family not supported by protocol>, subroutine=<socket>

It could be that they arise from cached adresses, because we do:

fd = socket(p->ai_family, p->ai_socktype,  p->ai_protocol);

but later then use the cached address with:

fd = socket(p->ai_family, SOCK_STREAM, 0);

[rainer]

Believed to be fixed in changeset [313].

[rainer]

It has been confirmed that the fix doesn't solve the issue, and that the problem arises from the port check.

[rainer]

Believed to be fixed by changeset [334].