There is a patch exists that fixes this problem, but against more recent version of NetworkManager: https://bugzilla.gnome.org/show_bug.cgi?id=681764#c20 I tried to adapt it to 1.0.4 currently present in Ubuntu (and it works for me). However, further testing needed.
** Bug watch added: GNOME Bug Tracker #681764 https://bugzilla.gnome.org/show_bug.cgi?id=681764 ** Patch added: "nm.patch" https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1469346/+attachment/4541727/+files/nm.patch -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1469346 Title: DHCPv6 responses with multiple addresses applied incorrectly to interface Status in network-manager package in Ubuntu: Confirmed Bug description: A DHCPv6 server may respond with multiple addresses, and is not an unusual case as you may wish to provide both a ULA and a global prefix to a common suffix. Recent versions of OpenWRT behave in this manner for DHCPv6. Network Manager is handling this *almost* correctly. Both addresses get applied, just not simultaneously as would be expected. The dhclient process is seeing both addresses, and both get processed by the handler, but is handled as though there were two seperate requests, applies the first address, promptly removes it, and replaces it with the second address, resulting in only the latter address persisting after interface setup. After adding the following to the upstart config for network manager, you can easily follow the mishandling of the response: --log-level=debug --log-domains=DEVICE,IP6,DHCP6 The following are key lines from the debug logging: Jun 20 23:21:16 pinky-linux NetworkManager[6244]: <debug> [1434856876.790352] [nm-system.c:280] sync_addresses(): (wlan0): adding address '2607:xxxx:xxxx:ad10::61/128' ... Jun 20 23:21:17 pinky-linux NetworkManager[6244]: <debug> [1434856877.837130] [nm-system.c:247] sync_addresses(): (wlan0): removing address '2607:xxxx:xxxx:ad10::61/128' Jun 20 23:21:17 pinky-linux NetworkManager[6244]: <debug> [1434856877.837526] [nm-system.c:280] sync_addresses(): (wlan0): adding address 'fd5b:xxxx:xxxx:10::61/128' In this case the global prefixed address was applied, then immediately replaced by the ULA prefixed one. So it's correctly parsing both addresses of the response as supplied by dhclient, but the end result is not what is expected for the given configuration sent from the server. The correct behaviour is to add/replace all addresses in the response as a set. This negates much of the usefulness of supporting DHCPv6, and is an impediment to integration with IPv6 networks requiring it's use. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: network-manager 0.9.8.8-0ubuntu7.1 ProcVersionSignature: Ubuntu 3.16.0-38.52~14.04.1-generic 3.16.7-ckt10 Uname: Linux 3.16.0-38-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.11 Architecture: amd64 CurrentDesktop: Unity Date: Fri Jun 26 22:19:20 2015 IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback InstallationDate: Installed on 2015-05-21 (36 days ago) InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1) IpRoute: default via 192.168.169.1 dev wlan0 proto static 192.168.169.0/24 dev wlan0 proto kernel scope link src 192.168.169.61 metric 9 NetworkManager.state: [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true WimaxEnabled=true ProcEnviron: LANGUAGE=en_CA:en PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_CA.UTF-8 SHELL=/bin/bash SourcePackage: network-manager UpgradeStatus: No upgrade log present (probably fresh install) mtime.conffile..etc.NetworkManager.NetworkManager.conf: 2015-06-17T17:39:57.347300 mtime.conffile..etc.init.network.manager.conf: 2015-06-20T23:20:39.172713 nmcli-con: NAME UUID TYPE TIMESTAMP TIMESTAMP-REAL AUTOCONNECT READONLY DBUS-PATH somewhere 1bc6a70d-cf1a-4109-8a21-71656d34685c 802-11-wireless 1435371500 Fri 26 Jun 2015 10:18:20 PM EDT yes no /org/freedesktop/NetworkManager/Settings/0 nmcli-dev: DEVICE TYPE STATE DBUS-PATH eth0 802-3-ethernet unavailable /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 0.9.8.8 connected enabled enabled enabled enabled enabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1469346/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
