Joe Orton wrote:
Rationale: Using AF_UNSPEC as the default family passed to getaddrinfo()
is a bad default in many configurations; it means AAAA queries will be
performed, regardless of whether any IPv6 addresses are configured on
any interfaces (on most systems). The extra DNS queries mean slower
lookups.
The latest revision of the IPv6 socket extensions (RFC 3493) includes a
new flag, AI_ADDRCONFIG, which tells the resolver to only look up IPv6
addresses if the system has IPv6 configured on any interfaces, and
likewise for IPv4. This is a good default (in fact the Solaris
getaddrinfo already does this AFAICT).
Any objections to this patch? The application can still ask for just
IPv4 or just IPv6 if it wants, using the _ADDR_OK flags.
no objections here
