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Fix bad TCP checksum in packets with IP option header.

This commit is contained in:
tsutsui 2009-03-17 10:10:20 +00:00
parent be0c43535f
commit ce059cd609
1 changed files with 2 additions and 2 deletions
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4
dist/ipf/ipsend/ip.c vendored
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@ -1,4 +1,4 @@
/* $NetBSD: ip.c,v 1.8 2007/04/14 20:34:22 martin Exp $ */
/* $NetBSD: ip.c,v 1.9 2009/03/17 10:10:20 tsutsui Exp $ */
/*
* ip.c (C) 1995-1998 Darren Reed
@ -264,7 +264,7 @@ struct in_addr gwip;
hlen = IP_HL(ip) << 2;
t = (tcphdr_t *)((char *)ip + hlen);
ip2 = (struct ip *)lbuf;
t2 = (tcphdr_t *)((char *)ip2 + hlen);
t2 = (tcphdr_t *)((char *)ip2 + sizeof(ip_t));
thlen = TCP_OFF(t) << 2;
if (!thlen)
thlen = sizeof(tcphdr_t);