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" <[email protected]>
said:
> On Aug 06, 2007, at 19:37:47, Adam M wrote:
> > 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.
>
> 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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