From 6afaafd2aaf53c793eefeb6d602c1038625e9bff Mon Sep 17 00:00:00 2001
From: mdodd <mdodd@FreeBSD.org>
Date: Tue, 29 Apr 2003 21:36:18 +0000
Subject: IP_RECVTTL socket option.

Reviewed by:	Stuart Cheshire <cheshire@apple.com>
---
 sys/netinet/ip_input.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'sys/netinet/ip_input.c')

diff --git a/sys/netinet/ip_input.c b/sys/netinet/ip_input.c
index 5cf4ff4..32f2b6d 100644
--- a/sys/netinet/ip_input.c
+++ b/sys/netinet/ip_input.c
@@ -2052,6 +2052,12 @@ ip_savecontrol(inp, mp, ip, m)
 		if (*mp)
 			mp = &(*mp)->m_next;
 	}
+	if (inp->inp_flags & INP_RECVTTL) {
+		*mp = sbcreatecontrol((caddr_t) &ip->ip_ttl,
+		    sizeof(u_char), IP_RECVTTL, IPPROTO_IP);
+		if (*mp)
+			mp = &(*mp)->m_next;
+	}
 #ifdef notyet
 	/* XXX
 	 * Moving these out of udp_input() made them even more broken
-- 
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