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From Nicolas Dade <ndade@nsd.dyndns.org>: the VLAN tag is in the lower 

12 bits of the VLAN field - check only those bits, not the priority or
CFI flag.
This commit is contained in:
guy 2004-08-27 07:37:10 +00:00
parent 4017783b36
commit 2ae5a9fc8c
2 changed files with 3 additions and 2 deletions
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1
CREDITS
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@ -59,6 +59,7 @@ Additional people who have contributed patches:
Martin Husemann <martin@netbsd.org>
Mike Wiacek <mike@iroot.net>
Monroe Williams <monroe@pobox.com>
Nicolas Dade <ndade@nsd.dyndns.org>
Octavian Cerna <tavy@ylabs.com>
Olaf Kirch <okir@caldera.de>
Onno van der Linden <onno@simplex.nl>

4
gencode.c
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@ -21,7 +21,7 @@
*/
#ifndef lint
static const char rcsid[] _U_ =
"@(#) $Header: /tcpdump/master/libpcap/gencode.c,v 1.208 2004-08-18 14:25:02 hannes Exp $ (LBL)";
"@(#) $Header: /tcpdump/master/libpcap/gencode.c,v 1.209 2004-08-27 07:37:10 guy Exp $ (LBL)";
#endif
#ifdef HAVE_CONFIG_H
@ -5283,7 +5283,7 @@ gen_vlan(vlan_num)
if (vlan_num >= 0) {
struct block *b1;
b1 = gen_cmp(orig_nl, BPF_H, (bpf_int32)vlan_num);
b1 = gen_mcmp(orig_nl, BPF_H, (bpf_int32)vlan_num, 0x0fff);
gen_and(b0, b1);
b0 = b1;
}