diff -ruN /cvs/sys.old/net/bridge.c /usr/src/sys/net/bridge.c
--- /cvs/sys.old/net/bridge.c	Tue Nov 21 23:02:24 2000
+++ /usr/src/sys/net/bridge.c	Tue Nov 21 23:41:54 2000
@@ -630,8 +630,14 @@
 
     if (dst == BDG_DROP) { /* this should not happen */
 	printf("xx bdg_forward for BDG_DROP\n");
-	m_freem(*m0) ;
-	*m0 = NULL ;
+#ifdef DUMMYNET
+	if ((*m0)->m_type == MT_DUMMYNET)
+		/* XXX: Shouldn't have to be doing this. */
+		m_freem((*m0)->m_next);
+	else
+#endif
+		m_freem(*m0);
+	*m0 = NULL;
 	return 0;
     }
     if (dst == BDG_LOCAL) { /* this should not happen as well */
@@ -757,7 +763,15 @@
 	    /*
 	     * pass the pkt to dummynet. Need to include m, dst, rule.
 	     * Dummynet consumes the packet in all cases.
+	     * Also need to prepend the ethernet header.
 	     */
+	    M_PREPEND(m, ETHER_HDR_LEN, M_DONTWAIT);
+	    if (m == NULL) {
+		if (canfree)
+			*m0 = NULL;
+		return ENOBUFS;
+	    }
+	    bcopy(eh, mtod(m, struct ether_header *), ETHER_HDR_LEN);
 	    dummynet_io((off & 0xffff), DN_TO_BDG_FWD, m, dst, NULL, 0, rule, 0);
 	    if (canfree) /* dummynet has consumed the original one */
 		*m0 = NULL ;
diff -ruN /cvs/sys.old/netinet/ip_dummynet.c /usr/src/sys/netinet/ip_dummynet.c
--- /cvs/sys.old/netinet/ip_dummynet.c	Tue Nov 21 23:04:39 2000
+++ /usr/src/sys/netinet/ip_dummynet.c	Tue Nov 21 23:32:26 2000
@@ -404,13 +404,13 @@
 	    struct mbuf *m = (struct mbuf *)pkt ;
 	    struct ether_header hdr;
 
-	    if (m->m_len < ETHER_HDR_LEN
-	      && (m = m_pullup(m, ETHER_HDR_LEN)) == NULL) {
-		m_freem(m);
+	    if (pkt->dn_m->m_len < ETHER_HDR_LEN
+	      && (pkt->dn_m = m_pullup(pkt->dn_m, ETHER_HDR_LEN)) == NULL) {
+		m_freem(pkt->dn_m);
 		break;
 	    }
-	    bcopy(mtod(m, struct ether_header *), &hdr, ETHER_HDR_LEN);
-	    m_adj(m, ETHER_HDR_LEN);
+	    bcopy(mtod(pkt->dn_m, struct ether_header *), &hdr, ETHER_HDR_LEN);
+	    m_adj(pkt->dn_m, ETHER_HDR_LEN);
 	    bdg_forward(&m, &hdr, pkt->ifp);
 	    if (m)
 		m_freem(m);