We have tried to use the option lxc-default-mtu: 9000, on juju version 1.23.3 and did the following:
1) bootstrap to a machine 2) create an lxc containter on the bootstrap node 3) deploy ubuntu to another lxc container on the same node The option didn't have any effect. All the interfaces ended up at MTU 1500. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to isc-dhcp in Ubuntu. https://bugs.launchpad.net/bugs/1403955 Title: DHCP's "Option interface-mtu 9000" is being ignored on bridge interface br0 Status in juju-core: Triaged Status in isc-dhcp package in Ubuntu: Confirmed Bug description: In an env with jumbo frames enabled, and using MAAS as DHCP server, the client receives the following IPv4 lease: $ cat /var/lib/dhcp/dhclient.br0.leases lease { interface "br0"; fixed-address 10.230.20.26; filename "pxelinux.0"; option subnet-mask 255.255.248.0; option dhcp-lease-time 43200; option routers 10.230.16.1; option dhcp-message-type 5; option dhcp-server-identifier 10.230.20.1; option domain-name-servers 10.230.20.1; option interface-mtu 9000; option broadcast-address 10.230.23.255; option domain-name "ctsstack.qa.1ss"; renew 3 2014/12/17 16:48:15; rebind 3 2014/12/17 21:52:09; expire 3 2014/12/17 23:22:09; } The interfaces show the following config after boot: $ ifconfig br0 br0 Link encap:Ethernet HWaddr a0:d3:c1:01:9d:58 inet addr:10.230.20.26 Bcast:10.230.23.255 Mask:255.255.248.0 inet6 addr: fe80::a2d3:c1ff:fe01:9d58/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:530530 errors:0 dropped:0 overruns:0 frame:0 TX packets:1591569 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:68713489 (68.7 MB) TX bytes:213710979 (213.7 MB) $ ifconfig eth0 eth0 Link encap:Ethernet HWaddr a0:d3:c1:01:9d:58 inet6 addr: fe80::a2d3:c1ff:fe01:9d58/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:10539274 errors:0 dropped:3394 overruns:0 frame:454 TX packets:2627412 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:2320560616 (2.3 GB) TX bytes:3562885157 (3.5 GB) Interrupt:32 "option interface-mtu 9000;" from the lease file is being ignored by br0. Could it be related to eth0 MTU size? If that's the case, shouldn't both interfaces be updated? Other info: $ brctl show br0 bridge name bridge id STP enabled interfaces br0 8000.a0d3c1019d58 no eth0 $ cat /etc/network/eth0.config iface eth0 inet manual auto br0 iface br0 inet dhcp bridge_ports eth0 To manage notifications about this bug go to: https://bugs.launchpad.net/juju-core/+bug/1403955/+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
