* Update docs/submodules/ipv6 from branch 'stable/euphrates'
- Updated Release Notes for Euphrates 5.1 Release
Change-Id: I78bb0ea3031c3c7faa00b97061e52574643f7654 Signed-off-by: Bin Hu <bh526r@att.com>
(cherry picked from commit 3f568e586686a93225e311444e73fe6cb0cab713)