refactor 4+6 to use alt image with ipv6 support

Change-Id: I1134568473abca0c47e88766450d74c81dd63981
refactor 4+6 to use alt image with ipv6 support after review

Change-Id: I14eab909445446ed36e1109d20f4ee669b8502ac
Merge pull request #32 from kshileev/test

refactor 4+6 to use alt image with ipv6 support