K 10 svn:author V 3 dru K 8 svn:date V 27 2014-02-25T15:57:17.627775Z K 7 svn:log V 193 Finish editorial pass through IPF NAT. Comment out symbolic substitution section for now. It is confusing as written and may no longer be needed with IPF's new syntax. Sponsored by: iXsystems END