BGP over IPSEC connection resets

[buckeyedave]

I have 2 IPSEC site to site connections that I am attempting to configure for BGP. They are using different ISPs. The tunnels get established as do the BGP sessions. But at after 2 minutes and 20 seconds, the connections drop, and only 1 will re-establish the connection. A packet capture on the interface indicates it is receiving a connection reset from the other end. Why would this occur after the initial connection is made and BGP is sending messages back and forth?

Visual of packet capture attached.