Comment 1 for bug 1547677

If mac of allowed-address pair is changed, then if the new mac is lesser than older mac
unicast route was not being published. This is because agent maintains list of
allowed-address pair keyed by IP + mac and its sorted by that, if the mac changes the deleted
IP + mac combination could be later in the list and hence IP route would get added by new
AAP entry and immediately deleted by old IP + mac combination