Re: [lwip-users] Multicast packet will drop in ip.c

[Brian Marshall]

I presume you mean SSDP when being used as part of Upnp? If so the SSDP 
messages are sent to the UPNP multicast address, but from the local 
address. You just need to join the multicast group and you can receive 
SSDP. See igmp_joingroup

-Brian.

Bandu wrote:
> thanks David.
> Is that also apply for UPnP, i mean get blocked, which multicast and, 
> i also think, got source IP address so that client can unicast back to 
> the source?
> Regards,
>  
> Bandu