K 10 svn:author V 3 ian K 8 svn:date V 27 2013-12-13T22:08:31.750345Z K 7 svn:log V 229 MFC r257258, r257265: Include headers (if_var.h and others) where needed. The change that triggered the need for this on head was r257244. That hasn't been MFC'd yet, but there's no harm in paving the way for it with this MFC. END