#9680 LOW Opportu: XO-1.5 os40 duplicate packets seen if other host is running tcpdump
Zarro Boogs per Child
bugtracker at laptop.org
Sun Nov 15 19:33:34 EST 2009
#9680: XO-1.5 os40 duplicate packets seen if other host is running tcpdump
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Reporter: Quozl | Owner: mbletsas
Type: defect | Status: new
Priority: low | Milestone: Opportunity
Component: wireless | Version: Development build as of this date
Keywords: | Next_action: diagnose
Verified: 0 | Deployment_affected:
Blockedby: | Blocking:
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Many duplicate packets are seen on a host if the other host in a private
network is running tcpdump in the default promiscuous mode.
* using the ''Frame'' key right-click on the wireless icon and ''Create
new wireless network'',
* wait for the icon for the new network to appear on the other XO-1.5
Neighbourhood View, and click on it,
* determine the IP addresses using ''ifconfig'' or the ''Frame'' key,
* on one XO start Terminal and run tcpdump:
{{{
tcpdump -i eth0
}}}
* on the other XO ping the IP address of the first XO, duplicate packets
will be seen on the ping output, and the tcpdump will show duplicates
received; nine for each packet,
* stop tcpdump, the duplicate ping packets will cease,
* start tcpdump, the duplicate ping packets will resume,
* stop tcpdump and start with -p flag, the duplicate ping packets will
cease.
Since use of tcpdump or promiscuous mode is not expected, leaving this one
as an Opportunity.
--
Ticket URL: <http://dev.laptop.org/ticket/9680>
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