-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Felipe Alfaro Solana wrote: > When running "telnet computer1" and looking at the packets captured by > Ethereal, I can see _exactly_ four queries, all of them asking for the > RR host record of "computer1.mydomain.com", that is, four queries asking > for the same FQDN. Of the four queries, the first one asks for the AAAA > RR, while the remaining three ask for the A RR. Look again. There are two and two. And you'll have to look at the so ruces for the old glibc version. It's not important enough to explain in detail here given that all these are implementation details which have changed. > In my case, it's just the other way around. I DO want IPv6 queries, and > I DO want IPv6 to always have precedence over IPv4. Anyways, I'll get > glibc-2.3.3-53 as soon as it's available. getaddrinfo does sorting according to RFC 3484. If the v4 addresses are before the v6 addresses in the list returned by getaddrinfo, then the v4 addresses are deemed preferrable. Usually this is the correct result. There are a few cornercases of RFC 3484 which I cannot implement at userlevel and there are a few places where the RFC 3484 is outdated (wrt to other parts of IPv6), but I hardly think this is a real problem. So, adjust your interfaces so that the address selection prefers the v6 addresses. And read RFC 3484. - -- â Ulrich Drepper â Red Hat, Inc. â 444 Castro St â Mountain View, CA â -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (GNU/Linux) iD8DBQFBSygk2ijCOnn/RHQRAucZAKCjK3n0dC/FqO+9cHPVIFtNk6tjFQCcDlgd 7WJA4r5l3kifdel7RWkd9Bo= =WVQn -----END PGP SIGNATURE-----
