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Re: Creating virtual interface triggers an IGMPv3 Join to Multicast DNS

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[view original message]
From: Adam M <lkml@...>
To: <linux-kernel@...>
Subject: Creating virtual interface triggers an IGMPv3 Join to Multicast DNS
Date: Monday, August 6, 2007 - 7:37 pm

Hi folks,


For some reason, every time I create a virtual interface (using tun),

the interface immediately generates an IGMPv3 Join packet for group

224.0.0.251, which (according to Google) is Multicast DNS.


This packet is generated automatically and consistently. I'm wondering

why this should be the case, and if it can be disabled.


Thanks,

Adam

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[view original message]
From: Kyle Moffett <mrmacman_g4@...>
To: Adam M <lkml@...>
Cc: <linux-kernel@...>
Subject: Re: Creating virtual interface triggers an IGMPv3 Join to Multicast DNS
Date: Tuesday, August 7, 2007 - 12:30 am

You don't happen to be running "avahi" or one of the other Zeroconf/

Bonjour/Rendezvous/$P2P_BUZZWORD_OF_THE_WEEK local-network-discovery

daemons, do you?  Most of those keep an eye out for new network

interfaces and automatically start pushing multicast packets down

them as soon as they appear, which is the most likely explanation for

what you are seeing; as opposed to a kernel issue.


Cheers,

Kyle Moffett


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[view original message]
From: Adam M <lkml@...>
To: Kyle Moffett <mrmacman_g4@...>
Cc: <linux-kernel@...>
Subject: Re: Creating virtual interface triggers an IGMPv3 Join to Multicast DNS
Date: Tuesday, August 7, 2007 - 9:15 am

Hi Kyle,


Ah-hah, you nailed it right on the head. I unknowingly had Bonjour

running (must be installed by default on Fedora Core 3), which started a

process 'mDNSResponder'. I'm guessing that's the bugger that's fire off

these multicast joins.


Thanks for the tip!


-Adam


On Tue, 7 Aug 2007 00:30:36 -0400, "Kyle Moffett" <mrmacman_g4@mac.com>

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Previous thread: Re: Disk spin down issue on shut down/suspend to disk by Robert Hancock on Monday, August 6, 2007 - 7:31 pm. (26 messages)

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