Comment 18 for bug 1567586

Reviewed: https://review.opencontrail.org/22696
Committed: http://github.org/Juniper/contrail-controller/commit/b7cc0d7cd984d89b382b163d5b636a88814288f5
Submitter: Zuul
Branch: R3.1

commit b7cc0d7cd984d89b382b163d5b636a88814288f5
Author: Manish <email address hidden>
Date: Fri May 6 00:51:14 2016 +0530

In BGP service if VM sends TTL 1 session doesnt come up.

If TTL is sent as 1 by VM, modify it to 255 and for reverse keep it at 2.
(Logic for 2 is that vrouter decrements TTL because of routing and hence VM
should get packet back with 1).
If TTL is anything else than 1, then honor it.

Closes-bug: #1567586

Conflicts:
 src/vnsw/agent/pkt/flow_entry.cc
 src/vnsw/agent/pkt/pkt_flow_info.h
 src/vnsw/agent/vrouter/ksync/flowtable_ksync.cc
Change-Id: Ie2f5e5c3513d2e1a1b26d0c47f906a3a70f32abb