From owner-freebsd-bugs  Tue Feb 29 14:40: 6 2000
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Date: Tue, 29 Feb 2000 17:31:47 -0500 (EST)
From: Louis Mamakos <louie@uu.net>
Reply-To: louie@uu.net
To: FreeBSD-gnats-submit@freebsd.org, current@freebsd.org
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Subject: bin/17083: tcpdump and IPv6 poor interaction
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>Number:         17083
>Category:       bin
>Synopsis:       tcpdump vs. IPv6 bug
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Feb 29 14:40:00 PST 2000
>Closed-Date:
>Last-Modified:
>Originator:     Louis Mamakos
>Release:        FreeBSD 4.0-CURRENT i386
>Organization:
UUNET
>Environment:

FreeBSD-current as-of 29 Feb 2000, IPv6 configured

>Description:

If a host has both A and AAAA records in the DNS, then tcpdump will
complain that you're trying to apply the 'ip' modifier to an ip6
host.	Curiously, the reverse also breaks:

>How-To-Repeat:

	# tcpdump ip host whizzo.transsys.com
	tcpdump: 'ip' modifier applied to ip6 host

	# tcpdump ip6 host whizzo.transsys.com
	tcpdump: 'ip6' modifier applied to ip host


>Fix:

or at least a work-around

	tcpdump ip and host whizzo.transsys.com

but this is ugly and not backwards compatible.



>Release-Note:
>Audit-Trail:
>Unformatted:


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