Fixed below issues found during IPA bring up:

1. Fix ipv6 ping fail
2. Fix ipv6 rule address-reverse order issue
3. Fix duplicate filter rule deletion issue
4. Fix Software-routing checking issue
5. fix wlan down first wan down next issue

Change-Id: I816ee5766f9e291f94a76a67efef6c5971ff9a18
13 files changed
tree: c8eacaf98624d0a14970a98a0c0eebeddaad6e82
  1. ipacm/
  2. ipanat/
  3. configure.ac
  4. Makefile.am