Sending multicast datagrams broken (regression)

[Pieter de Goeje]

On Sunday 19 July 2009 04:09:26 Bruce Simpson wrote:
> Pieter de Goeje wrote:
> > I'm observing that multicast IPv4 UDP datagrams sent from the latest
> > 8.0-BETA2 are being discarded. The code below used to work with 7.2.
>
> Can you tcpdump this?
>
> This may be related to an llentry related regression which Xin Li
> recently posted a patch for, it appears that layer 2 addresses for
> multicast/broadcast datagrams may be broken in 8.0-BETA2.
>
> Although I haven't tested this myself since committing the SSM code
> around April, where I observed such traffic was correct.

Dump from an 8.0 sender:
http://unforgiven.student.utwente.nl/~pyotr/dump/mcast

Indeed it looks like the destination mac address is different from the dump 
generated by 7.2.

8.0: 00:00:0c:07:ac:00
7.2: 01:00:5e:7f:09:09

Kind regards,

Pieter de Goeje