I am seeing this behaviour in 14.04. MTU set to 1392 in GUI, but ifconfig displays 1492.
-- 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/387456 Title: wrong mtu value on dsl connection Status in NetworkManager: Expired Status in “network-manager” package in Ubuntu: Confirmed Bug description: Binary package hint: network-manager i am using pppoe connection for internet. however, i cant visit some sites and i cannot use pidgin for msn on 9.04 due to wrong mtu value for ppp0. network manager sets 1492 as mtu value for dsl connections. if i use pppoeconf instead of network manager to set my connection, it gives 1488 and everything works as expected. i am now manually setting mtu with ifconfig ppp0 mtu 1488 everytime a make a connection. and also trying to set the mtu value for my dsl connection with the gui of network-manager does not work, and it gives 1492 all time. this was not a problem with 8.10, and i am not the only person affected on my network. network-manager: Installed: 0.7.1~rc4.1.cf199a964-0ubuntu2 To manage notifications about this bug go to: https://bugs.launchpad.net/network-manager/+bug/387456/+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