K 10 svn:author V 6 brooks K 8 svn:date V 27 2007-05-16T19:59:01.000000Z K 7 svn:log V 201 Update the comments on if_alloc(), if_free(), if_free_type(), and if_attach. Remove a comment about pre-3.0 network drivers from if_attach(). Be a bit more consistant about whitespace near comments. END