From 95b30dbdaaa8ad2c71e5c9c0af9575e7207a6223 Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Tue, 8 Jul 1997 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 1997-07-08

---
 ip/udp.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/ip/udp.c b/ip/udp.c
index b71975af21b09cb9deebb48e9b634cc245e9af1c..5f36900156f511c52d7a9a98915144fc1c0e8a78 100644
--- a/ip/udp.c
+++ b/ip/udp.c
@@ -270,7 +270,10 @@ udpiput(Media *m, Block *bp)
 		/* pass the src address */
 		bp = padblock(bp, UDP_USEAD);
 		hnputl(bp->rp, raddr);
-		hnputl(bp->rp+4, laddr);
+		if(Mediaforme(uh->udpdst) > 0)
+			hnputl(bp->rp+4, laddr);
+		else
+			hnputl(bp->rp+4, m->myip[0]);
 		hnputs(bp->rp+8, rport);
 		hnputs(bp->rp+10, lport);
 	} else {
@@ -282,7 +285,9 @@ udpiput(Media *m, Block *bp)
 
 			/* reply with the same ip address (if not broadcast) */
 			if(Mediaforme(uh->udpdst) > 0)
-				c->laddr = nhgetl(uh->udpdst);
+				c->laddr = laddr;
+			else
+				c->laddr = m->myip[0];
 		}
 	}
 	if(bp->next)