linux-kernel - [patch] net, ipv4: fix link error when CONFIG

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Date:	Sun, 28 Apr 2013 14:08:41 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	"David S. Miller" <davem@...emloft.net>
cc:	Alexey Kuznetsov <kuznet@....inr.ac.ru>,
	James Morris <jmorris@...ei.org>,
	Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
	Patrick McHardy <kaber@...sh.net>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [patch] net, ipv4: fix link error when CONFIG_IPV6 is a module

net/built-in.o: In function `ip_tunnel_xmit':
(.text+0x11ec70): undefined reference to `icmpv6_send'

Signed-off-by: David Rientjes <rientjes@...gle.com>
---
 net/ipv4/ip_tunnel.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
--- a/net/ipv4/ip_tunnel.c
+++ b/net/ipv4/ip_tunnel.c
@@ -600,7 +600,7 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
 			goto tx_error;
 		}
 	}
-#if IS_ENABLED(CONFIG_IPV6)
+#if IS_BUILTIN(CONFIG_IPV6)
 	else if (skb->protocol == htons(ETH_P_IPV6)) {
 		struct rt6_info *rt6 = (struct rt6_info *)skb_dst(skb);
 
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