nanog mailing list archives
Re: Waste will kill ipv6 too
From: William Herrin <bill () herrin us>
Date: Fri, 29 Dec 2017 12:43:02 -0500
On Fri, Dec 29, 2017 at 5:27 AM, <sthaug () nethelp no> wrote:
It's rather interesting how parsing of variable length addresses was thought to be way too complicated - while parsing of IPv6 extension header chains of unknown length was okay.
IIRC, IPv6 extension headers are optional. The router does have to check if there are any hop-by-hop options but it doesn't need to examine more than the first extension header (and always the same byte offset) to determine if it has to look. More, it's allowed to reject the packet with a parameter problem rather than process the header. The originating and destination nodes have to pay attention to all extension headers, but then they always did have to process packets with information of variable lengths. Regards, Bill Herrin -- William Herrin ................ herrin () dirtside com bill () herrin us Dirtside Systems ......... Web: <http://www.dirtside.com/>
Current thread:
- Re: Waste will kill ipv6 too, (continued)
- Re: Waste will kill ipv6 too bzs (Dec 28)
- Re: Waste will kill ipv6 too Owen DeLong (Dec 28)
- Re: Waste will kill ipv6 too bzs (Dec 28)
- Re: Waste will kill ipv6 too Large Hadron Collider (Dec 28)
- Re: Waste will kill ipv6 too valdis . kletnieks (Dec 28)
- Re: Waste will kill ipv6 too sthaug (Dec 29)
- Re: Waste will kill ipv6 too Mikael Abrahamsson (Dec 29)
- Re: Waste will kill ipv6 too Nick Hilliard (Dec 29)
- Re: Waste will kill ipv6 too Owen DeLong (Dec 29)
- Re: Waste will kill ipv6 too Nick Hilliard (Dec 29)
- Re: Waste will kill ipv6 too William Herrin (Dec 29)
- Re: Companies using public IP space owned by others for internal routing james machado (Dec 17)
- Re: Companies using public IP space owned by others for internal routing Harry McGregor (Dec 17)
- Re: Companies using public IP space owned by others for internal routing Tom Carter (Dec 18)
- Re: Companies using public IP space owned by others for internal routing Harald Koch (Dec 18)
- Re: Companies using public IP space owned by others for internal routing Mark Andrews (Dec 18)
- Re: Companies using public IP space owned by others for internal routing Phil Bedard (Dec 18)
- Re: Companies using public IP space owned by others for internal routing Livingood, Jason (Dec 19)
- Re: Companies using public IP space owned by others for internal routing Owen DeLong (Dec 19)