Fernando, >>> However, anything that says "if the chain is >X, then drop" is broken, >>> period. At some point, if you want to play "IPv6 router", you need to earn >>> the title. >> >> an IPv6 router compliant with RFC2460 does not inspect the header chain. >> >> I'm not aware of any router that drop packets with extension headers. >> I'm aware of network operators applying filtering policy that results in >> packets with extension headers being dropped. > > IIRC, someone reported that Cisco ASA drop v6 packets with extension > headers by default.....
I think you'll find that the Cisco ASA isn't marketed as a router either, it is a firewall. >> just to be clear I'm not against the IETF documenting e.g. in a BCP, what >> the longest expected header chain should be. > > Well, that seems more std track than bcp to me. I don't think we should encode in standard a number that is based on the ability of current hardware. nor do I think we have any standard documents describing the behaviour of filtering routers / firewalls / middleboxes in this respect. cheers, Ole -------------------------------------------------------------------- IETF IPv6 working group mailing list [email protected] Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
