nanog mailing list archives
Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms
From: Joel Jaeggli <joelja () bogus com>
Date: Tue, 5 Mar 2019 02:09:15 -0800
Sent from my iPhone
On Mar 5, 2019, at 01:31, Saku Ytti <saku () ytti fi> wrote:On Tue, Mar 5, 2019 at 12:26 AM Mark Andrews <marka () isc org> wrote: Then Cloudflare should negotiate MSS’s that don’t generate PTB’s if they have installed broken ECMP devices. The simplest way to do thatOut of curiosity does that imply you are aware of non-broken ECMP devices, which are able to hash on the embedded original packet?
Parsing the icmp payload was something we considered in rfc7690 but wasn’t one the approaches we pursued (we broadcasted the ptb to all hosts on the segment(s) behind the load balancers in our original implementation). It actually seems like it is becoming feasible to do in an Ethernet switch ASIC like tofino if that is what you want to burn real estate on. Being worthwhile is another matter.
-- ++ytti
Current thread:
- Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms, (continued)
- Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms Mark Tinka (Mar 04)
- Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms Joel Jaeggli (Mar 05)
- Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms Thomas Bellman (Mar 05)
- Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms,Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms sthaug (Mar 05)
- Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms Stephen Satchell (Mar 05)
- Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms Bjørn Mork (Mar 05)
- Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms Hunter Fuller (Mar 05)
- Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms Fernando Gont (Mar 05)
- Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms Mark Andrews (Mar 05)
- Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms Saku Ytti (Mar 05)
- Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms Joel Jaeggli (Mar 05)
- Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms Saku Ytti (Mar 05)
- Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms Töma Gavrichenkov (Mar 08)
- Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms Saku Ytti (Mar 08)
- Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms Tarko Tikan (Mar 08)
- Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms Töma Gavrichenkov (Mar 08)
- Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms Saku Ytti (Mar 08)
- Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms Töma Gavrichenkov (Mar 08)
- Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms Saku Ytti (Mar 08)
- RE: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms adamv0025 (Mar 12)
- Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms Saku Ytti (Mar 12)