From 725c0c87926abdc5f7b2fee52132d9ec82d64ac3 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Sat, 8 Mar 2008 19:17:22 +0000 Subject: [BZ #5760] * inet/inet6_opt.c (inet6_opt_init): Fix ip6h_len computation. Patch by Roland Bless . --- inet/inet6_opt.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'inet') diff --git a/inet/inet6_opt.c b/inet/inet6_opt.c index 17d3fee213..83063d2259 100644 --- a/inet/inet6_opt.c +++ b/inet/inet6_opt.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2006, 2007 Free Software Foundation, Inc. +/* Copyright (C) 2006, 2007, 2008 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper , 2006. @@ -39,7 +39,11 @@ inet6_opt_init (void *extbuf, socklen_t extlen) /* Fill in the length in units of 8 octets. */ struct ip6_hbh *extp = (struct ip6_hbh *) extbuf; - extp->ip6h_len = extlen / 8; + + /* RFC 2460 requires that the header extension length is the + length of the option header in 8-byte units, not including + the first 8 bytes. Hence we have to subtract one. */ + extp->ip6h_len = extlen / 8 - 1; } return sizeof (struct ip6_hbh); -- cgit v1.2.3