Processing RH0 does not mean a host acts as a bounce point. If a node decides to forward traffic it is a router. A host can properly process an RH0 packet and drop it if one of its other addresses is not the next hop.
I object to the entire hysteria driven effort to deprecate RH0. Tony > -----Original Message----- > From: Joe Abley [mailto:[EMAIL PROTECTED] > Sent: Friday, July 06, 2007 6:55 AM > To: Christopher Morrow > Cc: IPv6 WG > Subject: Re: IPv6 WG Last Call: <draft-ietf-ipv6-deprecate-rh0-01.txt> > > > On 6-Jul-2007, at 00:31, Christopher Morrow wrote: > > > I hesitate to get rid or something because of this sole reason, I > > think another answer would be to make paying attention to it just > > optional for routing gear (or all things, honestly I really only care > > about routing gear, and so does this draft). > > Actually, no -- hosts which conform to the current spec also process > RH0. So even if all IPv6 routers had RH0 functionality removed, hosts > could still act as bounce points for the purposes of congesting > remote paths. > > > I'd also take issue, for many of the same reasons stated earlier > with: > > > > "The severity of this threat is considered to be sufficient to > warrant > > deprecation of RH0 entirely" > > > > from the draft, I don't think that deprecation is warranted in this > > case, if it is than anything that can cause amplification attacks is > > likely also in need of deprecation. > > So, to summarise: your proposal is that RH0 should not be deprecated, > but that it should be made optional? I'm not convinced that I > understand how that's going to prevent the "amplification over remote > paths" problem. > > Note too that several widely-deployed IPv6 stacks have already taken > the approach of effectively deprecating RH0. So there's a practical > consideration that if we decide to do something different, we are > diverging from deployed practice. > > > Joe > > > -------------------------------------------------------------------- > IETF IPv6 working group mailing list > ipv6@ietf.org > Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6 > -------------------------------------------------------------------- -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
