> Christopher Morrow <mailto:christopher.mor...@gmail.com> > 10 June 2013 20:59 > On Mon, Jun 10, 2013 at 2:44 PM, Ray Hunter <v6...@globis.net> wrote: >>> Christopher Morrow <mailto:christopher.mor...@gmail.com> >>> 10 June 2013 17:22 >>> On Mon, Jun 10, 2013 at 10:56 AM, Nalini Elkins >>> >>> Some of the discussion already had talks about ordering and optimum >>> method to find X in the header chain. What happens in these situations >>> when someone sends 'lots' of packets with 'bad ordering' of the header >>> bits? Will the devices in the path behave 'well'? or will I get >>> degraded forwarding performance because of bad ordering? or will the >>> packets be dropped? or ? >>> >>> it's worth thinking about what can go wrong with this requirement to >>> order EH bits in certain ways. >>> >>> -chris >>> >> I purposefully left that particular can unopened, because I consider it >> unlikely that we will obtain rough consensus on it. > > :) > >> IMHO it's better to have an informational RFC that says "if you obey >> these simple formatting rules, your packet is likely to be transported >> (fast)" than nothing at all. > > right, but you're also asking HW manufacturers to optomize on a > certain ordering (sort of), that's going to lead to: 1, 2, 3 ordering > works great!
Yes. Better than today. > but: 3,2,1 == slow-path :( > > or COULD lead to that. Same as today. So they'll continue to make their own decision on whether to deploy slow path or drop. >> I just searched draft-ietf-v6ops-6204bis-12 for requirements on >> extension headers. Nada AFAICS. >> >> I also just tested my own home CPE for outbound transmission of >> extension headers (with and without firewall configured): >> HBH EH: tick >> Destination Options EH: tick >> Fragment EH: looks like they're always dropped > > neat... how about proto-59? (noext-headers)? :) Untested (no test source yet) regards, RayH -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
