Re: [lwip-users] multicast group membership not working for tap device

[address@hidden]

Sylvain Rochet wrote:
> Hello Stefan,
>
> On Tue, Jan 27, 2015 at 08:35:15PM +0000, Stefan P. Galanos wrote:
> > As a side question, I was wondering why the system command ifconfig(in
> > file tapif.c) used to configure the tap0 device uses the gateway
> > instead of the IP:
> GW is Linux-side, Host is lwIP-side, it's that simple :)

Am I correct to remember some changes in this area? Plus he says he's 
using 1.4.x...?

> (I can't help on the Multicast/IGMP part).

Unfortunately, I can't really help here, too (and Frédéric who wrote 
that part doesn't seem to be too active here, any more). Anyway, as I 
think you're speaking of registering lwIP as multicast consumer *inside* 
your linux, is this supported by tapif at all? Normally, switches 
implement this via IGMP snooping and I'm not sure linux does this 
internally...

Simon