Index: stable/9/sys/netpfil/ipfw/ip_fw2.c
===================================================================
--- stable/9/sys/netpfil/ipfw/ip_fw2.c	(revision 248493)
+++ stable/9/sys/netpfil/ipfw/ip_fw2.c	(working copy)
@@ -2398,7 +2398,30 @@ do {								\
 				done = 1;       /* exit outer loop */
 				break;
 
-			case O_REASS: {
+			case O_REASS:
+#ifdef INET6
+				if (is_ipv6) {
+					int off;
+
+					f->pcnt++;
+					f->bcnt += pktlen;
+					l = 0;
+					if ((ext_hd & EXT_FRAGMENT) == 0)
+						break;
+					off = sizeof(struct ip6_hdr);
+					if (frag6_input(&m, &off, 0) ==
+					   IPPROTO_DONE)
+					       retval = IP_FW_DENY;
+					else {
+						retval = IP_FW_REASS;
+						set_match(args, f_pos, chain);
+					}
+					args->m = m;
+					done = 1;
+					break;
+				} else
+#endif /* INET6 */
+				{
 				int ip_off;
 
 				f->pcnt++;