From 8a3beec66e8b6f0cb1451efcc8a0f55f3bad0614 Mon Sep 17 00:00:00 2001
From: Hiroki Sato <hrs@FreeBSD.org>
Date: Fri, 11 May 2012 20:01:45 +0000
Subject: [PATCH] Skip nd6 line with no warning message when the system does
 not support INET6.

Spotted by:	flo
---
 sbin/ifconfig/af_nd6.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/sbin/ifconfig/af_nd6.c b/sbin/ifconfig/af_nd6.c
index eed00eaf4044..654e2d97fe0b 100644
--- a/sbin/ifconfig/af_nd6.c
+++ b/sbin/ifconfig/af_nd6.c
@@ -148,12 +148,14 @@ nd6_status(int s)
 	memset(&nd, 0, sizeof(nd));
 	strncpy(nd.ifname, ifr.ifr_name, sizeof(nd.ifname));
 	if ((s6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
-		warn("socket(AF_INET6, SOCK_DGRAM)");
+		if (errno != EPROTONOSUPPORT)
+			warn("socket(AF_INET6, SOCK_DGRAM)");
 		return;
 	}
 	error = ioctl(s6, SIOCGIFINFO_IN6, &nd);
 	if (error) {
-		warn("ioctl(SIOCGIFINFO_IN6)");
+		if (errno != EPFNOSUPPORT)
+			warn("ioctl(SIOCGIFINFO_IN6)");
 		close(s6);
 		return;
 	}