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Created attachment 610245 [details]
vdsm.log

Description of problem:
I have two VLAN MTU networks attached to nic/BOND one with MTU 5000 and one with MTU 9000 the MTU on the nic/BOND is 9000 as is should be. 
When removing the network with the highest MTU (9000) the MTU on the nic/BOND is still 9000

Version-Release number of selected component (if applicable):
vdsm-4.9.6-32.0.el6_3.x86_64

How reproducible:
100%

Steps to Reproduce:
1.Create two networks: NONVM_VLAN_MTU_5000 and NONVM_VLAN_MTU_9000
2.attach the networks to nic (ETH0) and apply
3.Remove the network with MTU 9000 (NONVM_VLAN_MTU_9000)
  
Actual results:
ETH0 still have MTU=9000 in the ifcfg-eth0 file

Expected results:
ETH0 should have MTU=5000 in the ifcfg-eth0 file

http://gerrit.ovirt.org/#/c/7811/

Verified on vdsm-4.9.6-34.0.el6_3.x86_64

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHSA-2012-1508.html