Patch to restore vnet at a couple of places

[Vijay Singh]

Patch is against 9-stable.

[pc20 /u/vijay/bsd/CODE/9s/sys]# svn diff net/if_ethersubr.c
Index: net/if_ethersubr.c
===================================================================
--- net/if_ethersubr.c  (revision 232242)
+++ net/if_ethersubr.c  (working copy)
@@ -661,8 +661,10 @@
               m = (*lagg_input_p)(ifp, m);
               if (m != NULL)
                       ifp = m->m_pkthdr.rcvif;
-               else
+               else {
+                       CURVNET_RESTORE();
                       return;
+               }
       }

       /*
@@ -681,6 +683,7 @@
 #endif
                       ifp->if_ierrors++;
                       m_freem(m);
+                       CURVNET_RESTORE();
                       return;
               }

-vijay