re rm the  fs nat setting

git-svn-id: http://fusionpbx.googlecode.com/svn/trunk@6947 e2954ef0-caed-11de-bd98-e341d93cc3cc
Add a check for domain_uuid session.

git-svn-id: http://fusionpbx.googlecode.com/svn/trunk@6948 e2954ef0-caed-11de-bd98-e341d93cc3cc