Public bug reported: Setting MTU in the "Wired" tab of the network manager UI does nothing if IPv4 is set to disabled, eg in IPv6-only environments. Setting it to 9000 and bringing the interface up its still stuck at 1500, both global MTU and protocol specific MTU.
Enabling IPv4 with any bogus address makes configured MTU work. Tested on Quantal, network manager 0.9.6.0-0ubuntu7 Status in Precise is unknown but its likely a problem there too. ** Affects: network-manager (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1061304 Title: Configured ethernet MTU not set with IPv4 disabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1061304/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs