Hi Amos The *right* solution is to configure IPv6 properly on the machine as working with correct firewall rules to make it obey the local traffic policies (even if that policy is "no IPv6 packets to leave the machine"). Can you provide some configs or tutorials please, it would be nice to have a good looking log without such things: 2013/11/13 22:25:18| commBind: Cannot bind socket FD 25 to [::1]: (99) Cannot assign requested address 2013/11/13 22:25:18| commBind: Cannot bind socket FD 26 to [::1]: (99) Cannot assign requested address 2013/11/13 22:25:18| ERROR: Failed to create helper child read FD: UDP[::1] -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/Ubuntu-Server-13-10-Squid-3-3-8-WARNING-external-ACL-memberof-queue-overload-tp4663243p4663299.html Sent from the Squid - Users mailing list archive at Nabble.com.