Comment 346 for bug 417757

For reference, we also see this with our Cisco ACE20s, though Cisco are investigating whether the behaviour is intentional or not. I hold no opinion on the wisdom or not of using the same source port.

I am interested (purely from a curiosity PoV) why glibc doesn't send a single query packet with A and AAAA queries. Presumably there are some broken DNS servers that eat the whole packet?

Ulrich - re #5 which specific Fedora update resolved the slowness to be once per-process? Then I can ask our Unix team to pre-apply it to the build.

FYI, we are having timeouts at login - the number of DNS lookups involved in resolving the LDAP server, kerberos TCP & UDP SRV & A records exceeds 60 seconds!