Comment 2 for bug 1546073

Debugged the issue further to see why service chain routes are not published.
Found following
1. Agent doesn't subscribe to "default-domain:admin:l-vn:service-621cc9db-d8f4-4fda-9982-e2012c0e1719-default-domain_admin_si-nat" as it has not handled the previous delete.
2. As per Manish, the delete is not complete due to pending short flow. Due this, vroute-agent crashes with DeleteTimeout backtrace after ~15 mins and setup recovers.

So root cause for the crash and missing service chain route in left-vn is same(pending delete processing of internal routing instance for NAT instancE)