>Submitter-Id: current-users
>Originator: Louis Mamakos
>Organization: UUNET
>Confidential: no
>Synopsis: tcpdump vs. IPv6 bug
>Severity: serious
>Priority: medium
>Category: bin
>Release: FreeBSD 4.0-CURRENT i386
>Class: sw-bug
>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.
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