Comment 28 for bug 1649124

But I think this is a different issue, just looked similar to me:

2017-02-15 12:32:51.544 6 ERROR neutron.agent.ovsdb.impl_vsctl [-] Unable to execute ['ovs-vsctl', '--timeout=10', '--oneline', '--format=json', '--', '--id=@manager', 'create', 'Manager', 'target="ptcp:6640:169.254.0.1"', '--', 'add', 'Open_vSwitch', '.', 'manager_options', '@manager']. Exception: Exit code: 1; Stdin: ; Stdout: ; Stderr: ovs-vsctl: transaction error: {"details":"Transaction causes multiple rows in \"Manager\" table to have identical values (\"ptcp:6640:169.254.0.1\") for index on column \"target\". First row, with UUID ddfaa272-f2e2-4b43-a057-f51bfbda5e8d, was inserted by this transaction. Second row, with UUID f02b0f45-1df5-4b26-939a-faf5fefb8e87, existed in the database before this transaction and was not modified by the transaction.","error":"constraint violation"}

I think the problem is that the Manager "ptcp:6640:169.254.0.1" already exists on the openvswitch on xenserver and that it has not to be created.