In fddi_output it appears that the call to carp_output to 
modify the packet header to contain the virtual MAC address
happens too early.

This patch moves the carp_output call to a place where it 
can have an effect.

Chris Pascoe 
2004/06/28

Index: if_fddisubr.c
===================================================================
RCS file: /cvs/src/sys/net/if_fddisubr.c,v
retrieving revision 1.38
diff -u -r1.38 net/if_fddisubr.c
--- net/if_fddisubr.c	21 Jun 2004 23:50:36 -0000	1.38
+++ net/if_fddisubr.c	28 Jun 2004 08:31:57 -0000
@@ -431,6 +431,12 @@
 #if NBPFILTER > 0
   queue_it:
 #endif
+	if (hdrcmplt)
+		bcopy((caddr_t)esrc, (caddr_t)fh->fddi_shost,
+		    sizeof(fh->fddi_shost));
+	else
+ 		bcopy((caddr_t)ac->ac_enaddr, (caddr_t)fh->fddi_shost,
+		    sizeof(fh->fddi_shost));
 #if NCARP > 0
 	if (ifp->if_carp) { 
 		int error;
@@ -439,13 +445,6 @@
 			goto bad;
 	}
 #endif
-
-	if (hdrcmplt)
-		bcopy((caddr_t)esrc, (caddr_t)fh->fddi_shost,
-		    sizeof(fh->fddi_shost));
-	else
- 		bcopy((caddr_t)ac->ac_enaddr, (caddr_t)fh->fddi_shost,
-		    sizeof(fh->fddi_shost));
 	mflags = m->m_flags;
 	len = m->m_pkthdr.len;
 	s = splimp();