Nmap Development mailing list archives

--reason and --packet-trace with ipv6


From: "Paul Jenkins" <pjenkins () dsci com>
Date: Wed, 30 Sep 2009 08:50:20 -0400

Stop me if this is the wrong place to post these but in addition to the
DNS error and -sP times with ipv6, this morning I noticed something
else.

Command line

Nmap -6 -n -v --reason -sP -iL c:\ipv6.txt -oN c:\blahblahblah.txt

Nmap -6 -n -v --reason --packet-trace -sP -iL c:\ipv6.txt -oN
c:\blahblahblah.txt

The first set of options run with out a hitch on CentOS 5.3, WinXP, and
Win 2003, in short no issues all 20 hosts nmap reports as up.

The second set of options runs fine on the Linux box, reporting all 20
hosts up, however on the 2 windows boxes I receive a bunch of "CONN
(0.31020s) TCP localhost > [target ipv6 address] => Unknown error" and
then reports only 3 hosts up.

So all things equal adding --packet-trace seems to break the reporting
that all 20 hosts are indeed up, Wireshark shows identical packet
conversations. It appears that when the remote target refuses a
connection under the --packet-trace option it reports the host as down.

Thoughts?

Thanks,
-Paul

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