Public bug reported: Binary package hint: bind9
When using 'host' to do a dns lookup on Karmic, I get a fast initial response for the IPv4 lookup: m...@purple:~$ host www.google.com www.google.com is an alias for www.l.google.com. www.l.google.com has address 74.125.77.99 www.l.google.com has address 74.125.77.147 www.l.google.com has address 74.125.77.104 but then a long wait and a timeout on IPv6: ;; connection timed out; no servers could be reached ;; connection timed out; no servers could be reached I guess this is because my home network router/DNS cache does not support IPv6. This timeout for host lookups with 'host' is not such a problem, but also seems to affect firefox (fixable with a setting) and ssh logins to remote machines. Why does the host command look for a IPv6 address after It gets a good IPv4 response? I tried forcing only IPv4 lookup with 'host -4', but the result is the same: m...@purple:~$ host -4 www.google.com www.google.com is an alias for www.l.google.com. www.l.google.com has address 74.125.77.147 www.l.google.com has address 74.125.77.104 www.l.google.com has address 74.125.77.99 ;; connection timed out; no servers could be reached ;; connection timed out; no servers could be reached Is that behaviour intended? Is there really no way to gracefully ignore IPv6 when the local network does not support it? I am not the only one to run into this problem. See, for example: http://wiki.kartbuilding.net/index.php/DNS_-_Bind9#Slow_DNS_lookup_issues_with_bind9 http://ubuntuforums.org/showthread.php?t=87798 https://help.ubuntu.com/community/WebBrowsingSlowIPv6IPv4 http://www.ubuntugeek.com/how-to-disable-ipv6-in-ubuntu.html ** Affects: bind9 (Ubuntu) Importance: Undecided Status: New -- [Karmic] host -4 does IPv6 lookup -- times out https://bugs.launchpad.net/bugs/504963 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to bind9 in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
