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Because the IFF_NOARP flag is a negative option it needs to be negated

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when being applied from the "arp" option which itself is positive.

problem demonstrated by

# ifconfig tap3 create
# ifconfig tap3
tap3: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
	address: f2:0b:a4:7f:44:03
	media: Ethernet autoselect
# ifconfig tap3 arp
# ifconfig tap3
tap3: flags=8882<BROADCAST,NOARP,SIMPLEX,MULTICAST> mtu 1500
	address: f2:0b:a4:7f:44:03
	media: Ethernet autoselect
# ifconfig tap3 -arp
# ifconfig tap3
tap3: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
	address: f2:0b:a4:7f:44:03
	media: Ethernet autoselect
# ifconfig tap3 destroy
#
This commit is contained in:
plunky 2009-04-04 17:10:19 +00:00
parent 4cfab35c9c
commit bb505f700b
1 changed files with 3 additions and 3 deletions
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6
sbin/ifconfig/ifconfig.c
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@ -1,4 +1,4 @@
/* $NetBSD: ifconfig.c,v 1.214 2009/01/18 00:24:29 lukem Exp $ */
/* $NetBSD: ifconfig.c,v 1.215 2009/04/04 17:10:19 plunky Exp $ */
/*-
* Copyright (c) 1997, 1998, 2000 The NetBSD Foundation, Inc.
@ -63,7 +63,7 @@
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1983, 1993\
The Regents of the University of California. All rights reserved.");
__RCSID("$NetBSD: ifconfig.c,v 1.214 2009/01/18 00:24:29 lukem Exp $");
__RCSID("$NetBSD: ifconfig.c,v 1.215 2009/04/04 17:10:19 plunky Exp $");
#endif /* not lint */
#include <sys/param.h>
@ -131,7 +131,7 @@ static void status(const struct sockaddr_dl *, prop_dictionary_t,
static void usage(void);
static const struct kwinst ifflagskw[] = {
IFKW("arp", IFF_NOARP)
IFKW("arp", -IFF_NOARP)
, IFKW("debug", IFF_DEBUG)
, IFKW("link0", IFF_LINK0)
, IFKW("link1", IFF_LINK1)