** Changed in: juju-core
       Status: Triaged => Won't Fix

You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to isc-dhcp in Ubuntu.

  DHCP's "Option interface-mtu 9000" is being ignored on bridge
  interface br0

Status in juju-core:
  Won't Fix
Status in isc-dhcp package in Ubuntu:

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";
    filename "pxelinux.0";
    option subnet-mask;
    option dhcp-lease-time 43200;
    option routers;
    option dhcp-message-type 5;
    option dhcp-server-identifier;
    option domain-name-servers;
    option interface-mtu 9000;
    option broadcast-address;
    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:  Bcast:  Mask:
            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)

  "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:

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

Reply via email to