Comment 1 for bug 2024481

Not sure if related or not, but the final error "ERROR bgpspeaker.peer [-] AS_PATH on UPDATE message has loops." indicates that you have a broken BGP peer configuration, sending prefixes back to the bgp-agent, which shouldn't happen. In another recent bug, fixing that configuration also fixed other issues, so I would start with repairing that and see if you still can reproduce the issue afterwards.