Hi Richard Agreed but in extended the whiteboard is distributed so if your packet get out the wrong edge router it would filter them out...
Pascal >-----Original Message----- >From: Richard Kelsey [mailto:[email protected]] >Sent: vendredi 29 mai 2009 16:56 >To: Pascal Thubert (pthubert) >Cc: [email protected] >Subject: Re: [6lowpan] source address validation in ND 03 > > Date: Fri, 29 May 2009 11:55:10 +0200 > From: "Pascal Thubert (pthubert)" <[email protected]> > > The current draft inherits source address validation text from the > backbone router draft that's meant to prevent nodes in the LoWPAN from > using any address as source. > > section 7.5. about forwarding by Edge Routers has: > > " > Upon receiving packets on one of its LoWPAN interfaces, the Edge > Router checks whether it has a binding for the source address. If > it does, then the Edge Router can forward the packet; otherwise, > the Edge Router MUST discard the packet. > " > > That was fine for a backbone router in a mesh under > situation but that seems to falls short for route over, > because in that case the Edge Router is not necessarily > the first hop: > >The check described in the passage above seems to be >guarding against the use of a source address that is not >bound within the LoWPAN. It doesn't appear to be concerned >with a LoWPAN node using a source address that is bound to >some other node in the same LoWPAN. For the former, >guarding against the use of an unbound source address, I >don't think it matters whether the Edge Router is the first >hop or not. > -Richard Kelsey _______________________________________________ 6lowpan mailing list [email protected] https://www.ietf.org/mailman/listinfo/6lowpan
