tech-net: Re: Multicast and PIM

Subject: Re: Multicast and PIM
To: None <tech-net@NetBSD.org>
From: Hitoshi Asaeda <Hitoshi.Asaeda@sophia.inria.fr>
List: tech-net
Date: 04/10/2004 19:18:10

> But IGMP packets are alwyas sent to 224.0.0.0/3, aren't they? So this
> rule would match?
>  
> pass in on fxp0 to fxp1 from any to 224.0.0.0/3  
> pass in on fxp1 to fxp0 from any to 224.0.0.0/3

IGMP packet must be; TTL=1 and sent from neighbor nodes on a same link
(i.e. an igmp sender must use the same prefix). Hence it doesn't work,
I guess.
--
Hitoshi Asaeda