Implement PRC_IFUP a la PRC_IFDOWN so that protocols know when an interface

has come bacl up (and can referse actions taken as a result of downing).

1 files changed, 3 insertions, 5 deletions

diff --git a/sys/net/if.c b/sys/net/if.c
index 3a7c15cc2ec6..982fc002cd8e 100644
--- a/sys/net/if.c
+++ b/sys/net/if.c
@@ -377,15 +377,13 @@ void
 if_up(ifp)
 	register struct ifnet *ifp;
 {
+	register struct ifaddr *ifa;
 
 	ifp->if_flags |= IFF_UP;
 	microtime(&ifp->if_lastchange);
-#ifdef notyet
-	register struct ifaddr *ifa;
-	/* this has no effect on IP, and will kill all iso connections XXX */
-	for (ifa = ifp->if_addrlist; ifa; ifa = ifa->ifa_next)
+	for (ifa = ifp->if_addrhead.tqh_first; ifa; 
+	     ifa = ifa->ifa_link.tqe_next)
 		pfctlinput(PRC_IFUP, ifa->ifa_addr);
-#endif
 	rt_ifmsg(ifp);
 }