Thanks Alex, Cinap,

Right, the Pi uses USB for its built in nic.

I wanted to make sure that I have narrowed down where the missing functionality is. It sounds like I need to have a look at how multicast filtering works with supported PCI nic cards and apply that to nusb/ether.

Chris

From: Alex Musolino <musolinoa@gmail.com>;
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>;
Subject: Re: [9fans] IP Multicast - Results
Sent: Fri, Sep 16, 2016 3:00:37 PM

Chris,

As cinap says:

nusb/ether doesnt implement multicast filter.

This is your problem. I believe the Raspberry Pi has its NIC attached
via USB internally. Therefore, multicast won't (currently) work on the
Raspberry Pi.

--
Cheers,
Alex Musolino