On 18/08/2013 6:41 a.m., Bob wrote:
Hi there, Using squid 3.2.13. Machine running squid behind local router providing IPv6 connectivity via managed tunnel. I.e, squid host know nothing about the tunnel. A handful of web sites have intermittent ipv6 connectivity issues, and I want to get dns_v4_first behavior for only those sites, based on a dstdomain acl. Something like this: Acl bad_ipv6 dstdomain .baddomain.com Dns_v4_first bad_ipv6 Presently dns_v4_first only accept on or off. Is there a way to emulate the behavior I want?
Unfortunately no. The v4_first option is implemented by manipulating the structure of the DNS results packet returned to Squid's IP address cache. The objects necessary to setup ACLs are not available at that time and the time delay from testing them on every DNS lookup would be large for very low benefit.
It is possible to add an new access control test in the peer_selection.cc where the outgoing connections are decided though. Interested in sponsoring?
Amos
