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Description of problem:
When changing interfaces for a network, ifcfg file in old interface is left with BRIDGE=<networkName>.

Version-Release number of selected component (if applicable):
4.10.0-0.254

How reproducible:
always

Steps to Reproduce:
From WebAdmin:
1. Add host with more than 1 NIC to setup.
2. Add a network which is defined as a vm network.
3. In Setup Host Networks, assign this network to a nic and click OK.
4. In Setup Host Networks, drag the network to another nic and click OK.
  
Actual results:
Both /etc/sysconfig/network-scripts/ifcfg-<originalNicName>
and /etc/sysconfig/network-scripts/ifcfg-<newNicName>
have BRIDGE=<networkName>

Expected results:
The line should be removed from /etc/sysconfig/network-scripts/ifcfg-<originalNicName>

Additional info:
Also need to make sure the bridge that is up is not connected to both nics.

*** This bug has been marked as a duplicate of bug 845193 ***