[Click] Multicast DNS join from KernelTun?

[Adam M]

Hi folks,

So I've finally solved this mystery. Apparently there's a service called
'Bonjour' installed by default on Fedora Core 3. Bonjour starts a daemon
called 'mDNSResponder', which monitors for new interfaces to come up.
When 'mDNSResponder' detects a new interface, it generates a multicast
join from that interface for group '224.0.0.251'. That's why I see the
IGMPv3 Join packet as soon as KernelTun creates the virtual interface!

Thanks,
Adam


On Fri, 03 Aug 2007 19:21:32 -0400, "Adam M" <click at irotas.net> said:
> Hi folks,
> 
> For some reason, every time I bring up a virtual interface with
> KernelTun, the interface immediately generates a Multicast DNS join
> packet (group 224.0.0.251). I'm not sure why this is, and Google is not
> offering any assistance.
> 
> I was hoping someone would know why this is happening, or at least
> confirm that it also happens to them.
> 
> Thanks again,
> Adam