[AX25]: Revert to 2.6.9 behavior.

I suspect given that someone made the change for a reason that there
should probably be a sysctl to switch between AX.25 (as 2.6.9) and "kind
of routed AX.25-ish" (as 2.6.10).
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ax25/af_ax25.c

@@ -207,8 +207,16 @@ ax25_cb *ax25_find_cb(ax25_address *src_addr, ax25_address *dest_addr,
 			continue;
 		if (s->ax25_dev == NULL)
 			continue;
-		if (ax25cmp(&s->source_addr, src_addr) == 0 &&
-		    ax25cmp(&s->dest_addr, dest_addr) == 0) {
+		if (ax25cmp(&s->source_addr, src_addr) == 0 && ax25cmp(&s->dest_addr, dest_addr) == 0 && s->ax25_dev->dev == dev) {
+			if (digi != NULL && digi->ndigi != 0) {
+				if (s->digipeat == NULL)
+					continue;
+				if (ax25digicmp(s->digipeat, digi) != 0)
+					continue;
+			} else {
+				if (s->digipeat != NULL && s->digipeat->ndigi != 0)
+					continue;
+			}
 			ax25_cb_hold(s);
 			spin_unlock_bh(&ax25_list_lock);