1 files changed, 2 insertions, 1 deletions
diff --git a/os/ip/tcp.c b/os/ip/tcp.c
index c6e0a54f..08eeaf82 100644
--- a/os/ip/tcp.c
+++ b/os/ip/tcp.c
@@ -1317,8 +1317,9 @@ tcphangup(Conv *s)
 	tcb = (Tcpctl*)s->ptcl;
 	if(waserror())
 		return commonerror();
-	if(s->raddr != 0) {
+	if(ipcmp(s->raddr, IPnoaddr) != 0) {
 		if(!waserror()){
+			memset(&seg, 0, sizeof seg);
 			seg.flags = RST | ACK;
 			seg.ack = tcb->rcv.nxt;
 			tcb->rcv.una = 0;