Revert "fix for bug 4239: do not use ip command on AIX"

This reverts commit 98c70c2ee4cf42d135ef11ac45a77924dbb3ba82.
Revert "Revert "fix for bug 4239: do not use ip command on AIX""

This reverts commit 5b348a322028e3a245c23595f6f7eaeaac2319f5.
Revert "Revert "Revert "fix for bug 4239: do not use ip command on AIX"""

This reverts commit 64a2057a9492a0dcefee75fa301bbd671196928f.
Revert "Revert "fix for bug 4239: do not use ip command on AIX""

This reverts commit 5b348a322028e3a245c23595f6f7eaeaac2319f5.
undo the last wrong checkin 98c70c2ee4cf42d135ef11ac45a77924dbb3ba82, broke all the symbolic link files
fix for bug 4239: do not use ip command on AIX