I'm running Ubuntu 14.04 and IPv4 nameservers have prevalence over IPv6 nameservers!
Workaround is to configure under: 1- click on WiFi Icon; 2- Edit Connections; 4- go to "IPv4 Settings"; 5- choose "Automatic (DHCP) addresses only"; This way, my /etc/resolv.conf gets only the IPv6 nameservers, like this: -- nameserver 2620:0:ccc::2 nameserver 2620:0:ccd::2 -- This works for my since I don;t care anymore about IPv4 networks. But this is a big problem for dual-stacked environments! Best, Thiago -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/936712 Title: NetworkManager should put IPv6 DNS servers before IPv4 DNS servers in dnsmasq configuration (and possibly resolv.conf) Status in “network-manager” package in Ubuntu: Fix Released Bug description: In cases where you are indeed on a dual-stack network and received DNS information from either SLAAC or DHCPv6, these should be used before any equivalent IPv4 data (usually a fallback/compatibility layer in such environment). As an example, here's my generated /run/nm-dns-dnsmasq.conf on an up to date 12.04 system: server=172.17.20.30 server=172.17.25.30 server=172.16.20.32 server=2001:470:c364:1020:e084:d1ff:fe38:c4f5 server=2001:470:c364:1025:8837:98ff:fe43:90e6 server=2001:470:b4e9:1020:218:51ff:fe5a:9949 The result is that dnsmasq will only use the IPv6 dns servers if all 3 IPv4 dns servers are marked as failed. As dnsmasq is perfectly able to detect and avoid broken DNS servers, favoritizing IPv6 servers shouldn't cause any damage even in environment where the information received by NM is wrong. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/936712/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
