K 10
svn:author
V 3
hrs
K 8
svn:date
V 27
2010-01-31T08:16:37.915716Z
K 7
svn:log
V 903
- Check if_type of "addm <interface>" before setting the
  interface's MTU to the if_bridge(4) interface.  This fixes a
  bug that MTU value of "addm <interface>" is used even when it
  is invalid for the if_bridge(4) member:

  # ifconfig bridge0 create
  # ifconfig bridge0
  bridge0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500
  ...
  # ifconfig bridge0 addm lo0
  ifconfig: BRDGADD lo0: Invalid argument
  # ifconfig bridge0
  bridge0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 16384
  ...

- Do not ignore MTU value of an interface even when if_type == IFT_GIF.
  This fixes MTU mismatch when an if_bridge(4) interface has a
  gif(4) interface and no other interface as the member, and it
  is directly used for L2 communication with EtherIP tunneling
  enabled.

- Implement SIOCSIFMTU ioctl.  Changing the MTU is allowed only
  when all members have the same MTU value.

END