It happens ever time. My v6 nameserver is issued by an Apple Airport operating in tunnel mode. There is only a single nameserver issued and it is the address of the Airport (much as the v4 nameserver is the address of the Airport).
The RA issued by the router has a single recursive DNS entry in it. I'm also seeing the Ubuntu machine issue a 'port unreachable' ICMPv6 message to any v6 DNS responses. So the Ubuntu issues DNS query to port 53 over v6. The router responds back to the UDP source port Ubuntu then issues a 'port unreachable' ICMPv6 message. I'm not seeing that on the parallel v4 query. -- 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/996032 Title: Constant _ip6_config_add_nameserver: assertion `IN6_ARE_ADDR_EQUAL (nameserver, &nameservers[i]) == FALSE' failed messages in syslog Status in “network-manager” package in Ubuntu: Fix Released Status in “network-manager” source package in Precise: Triaged Bug description: When both the Ethernet and wlan are connected to an Apple Airport running IPv6. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: network-manager 0.9.4.0-0ubuntu3 ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14 Uname: Linux 3.2.0-24-generic x86_64 ApportVersion: 2.0.1-0ubuntu7 Architecture: amd64 CRDA: country GB: (2402 - 2482 @ 40), (N/A, 20) (5170 - 5250 @ 40), (N/A, 20) (5250 - 5330 @ 40), (N/A, 20), DFS (5490 - 5710 @ 40), (N/A, 27), DFS CheckboxSubmission: 55cafa5b8b82ed224cc59d444cb1fc25 CheckboxSystem: 3e53d3ea5811723345f19eff5070f9ab Date: Mon May 7 17:31:00 2012 IfupdownConfig: auto lo iface lo inet loopback InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012) IpRoute: default via 192.168.0.1 dev eth0 proto static 169.254.0.0/16 dev eth0 scope link metric 1000 192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.112 metric 1 192.168.0.0/24 dev wlan0 proto kernel scope link src 192.168.0.108 metric 2 NetworkManager.state: [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true WimaxEnabled=true SourcePackage: network-manager UpgradeStatus: Upgraded to precise on 2012-05-07 (0 days ago) nmcli-con: NAME UUID TYPE TIMESTAMP TIMESTAMP-REAL AUTOCONNECT READONLY DBUS-PATH Apple Network ad3977 6e164836-7615-41dd-b5bb-d76c15a3d43c 802-11-wireless 1336408221 Mon 07 May 2012 17:30:21 BST yes no /org/freedesktop/NetworkManager/Settings/2 Ethernet 8d5e9b11-7cd5-4f58-a0fd-3f3cbea16909 802-3-ethernet 1336408221 Mon 07 May 2012 17:30:21 BST yes no /org/freedesktop/NetworkManager/Settings/1 Brightbox 92ea9b57-86a6-4867-b825-5c8278657559 vpn 1336407670 Mon 07 May 2012 17:21:10 BST no no /org/freedesktop/NetworkManager/Settings/0 nmcli-dev: DEVICE TYPE STATE DBUS-PATH eth0 802-3-ethernet connected /org/freedesktop/NetworkManager/Devices/1 wlan0 802-11-wireless connected /org/freedesktop/NetworkManager/Devices/0 nmcli-nm: RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE WIFI WWAN-HARDWARE WWAN running 0.9.4.0 connected enabled enabled enabled enabled disabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/996032/+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
