I tested this on my own system (where my router handles DHCPv6 and DHCPv4, IPv6 going through a tunnel from tunnelbroker.net (Hurricane Electric); I can see no issue.
As displayed in the attached screenshot, while I guess dhclient doesn't explicitly request nameservers (or at least, not as clearly as in the example capture from Fedora 14), the recursive nameserver option is always listed and properly appears in NetworkManager and /etc/resolv.conf. This was on a brand new install from yesterday evening. At least, we can verify it's not an issue in NM, although there may still be something to be done for dhclient. ** Attachment added: "Screenshot.png" https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/770324/+attachment/2090396/+files/Screenshot.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/770324 Title: DNS resolvers are not requested/learned from DHCPv6 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs