Comment 26 for bug 1567586

Reviewed: https://review.opencontrail.org/25562
Committed: http://github.org/Juniper/contrail-controller/commit/48f5a7d43e201bef3a3d324f6e79248e71792b58
Submitter: Zuul
Branch: R3.2

commit 48f5a7d43e201bef3a3d324f6e79248e71792b58
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

(cherry picked from commit b7cc0d7cd984d89b382b163d5b636a88814288f5)

Change-Id: I5f5c634f9a6a6a19d1e7c37427a1b549019fcf6b