Re: [OPSEC] ECMP [Tsvart last call review of draft-ietf-opsec-ipv6-eh-filtering-06]
Ole Troan <otroan@employees.org> Thu, 06 December 2018 11:42 UTC
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From: Ole Troan <otroan@employees.org>
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Date: Thu, 06 Dec 2018 12:42:23 +0100
Cc: Brian E Carpenter <brian.e.carpenter@gmail.com>, Gert Doering <gert@space.net>, tsv-art <tsv-art@ietf.org>, OPSEC <opsec@ietf.org>, IETF-Discussion Discussion <ietf@ietf.org>, draft-ietf-opsec-ipv6-eh-filtering.all@ietf.org
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To: Stewart Bryant <stewart.bryant@gmail.com>
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Subject: Re: [OPSEC] ECMP [Tsvart last call review of draft-ietf-opsec-ipv6-eh-filtering-06]
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Stewart, >>> If it has to look at any it has a much more complex set of tests, or a >>> large vector table given the way the EH space is fragmented. >> Frankly doing it without a network processor seems wrong. You can't expect >> an ASIC or FPGA based device to handle the EH structures. > Something that has served the IETF well over the years is not to constrain the forwarding > implementation, and I think we would be wise to continue in that mould. Also we need > to remember that an NP is an application specific processor, and thus has various > hardware assists. > > No one talks about the internals of an NP, and I am not current on any vendor's design, > but it is reasonable to suggest that in addition to the s/w parser there might > be a h/w parser that does the heavy lifting, i.e. if IPv6 packet of expected type, dec > TTL and do what the TCAM say picking this ECMP option else parse it the hard way. > > Then there is something that we do not talk at all about in such designs: electrical power. > There is no question that it takes more power to s/w parse a packet, and sooner of later > the power burn of the Internet is going to come under scrutiny, and we will be asked > to reduce its carbon footprint. So you are arguing that we need to define ULPs that are easy for routers to parse? At arbitrary depth? Because why would the buck stop at the UDP header when transport has moved one layer up? As opposed to the 6man argument which is that IPv6 is explicitly designed to only require routers to need to process the first 40 bytes (with the one exception hook). And the design of EHs is specifically done to make it hard to parse for intermediate devices… Is that really the Internet we want? Of course it will be countered with encryption, but I foresee a raft of problems if the IETF as a whole would redefine the “formal Internet architecture”. Cheers, Ole
- [OPSEC] Tsvart last call review of draft-ietf-ops… Michael Scharf
- Re: [OPSEC] Tsvart last call review of draft-ietf… Joe Touch
- Re: [OPSEC] Tsvart last call review of draft-ietf… Brian E Carpenter
- Re: [OPSEC] Tsvart last call review of draft-ietf… Joe Touch
- Re: [OPSEC] Tsvart last call review of draft-ietf… Fernando Gont
- Re: [OPSEC] Tsvart last call review of draft-ietf… Fernando Gont
- Re: [OPSEC] Tsvart last call review of draft-ietf… Joe Touch
- Re: [OPSEC] Tsvart last call review of draft-ietf… Nick Hilliard
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Joe Touch
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Brian E Carpenter
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Joe Touch
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Christian Huitema
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Nick Hilliard
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Brian E Carpenter
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Christian Huitema
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Joe Touch
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Fernando Gont
- Re: [OPSEC] Tsvart last call review of draft-ietf… Fernando Gont
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Gert Doering
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Joe Touch
- Re: [OPSEC] Tsvart last call review of draft-ietf… Joe Touch
- Re: [OPSEC] Tsvart last call review of draft-ietf… Eric Rescorla
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Gert Doering
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Ole Troan
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Joe Touch
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Benjamin Kaduk
- Re: [OPSEC] Tsvart last call review of draft-ietf… Mark Andrews
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Brian E Carpenter
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Nick Hilliard
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Joe Touch
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Gert Doering
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Stewart Bryant
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Stewart Bryant
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Joe Touch
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Stewart Bryant
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Joe Touch
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Christopher Morrow
- Re: [OPSEC] Tsvart last call review of draft-ietf… C. M. Heard
- Re: [OPSEC] Tsvart last call review of draft-ietf… Christopher Morrow
- Re: [OPSEC] Tsvart last call review of draft-ietf… Brian E Carpenter
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Joe Touch
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Joe Touch
- Re: [OPSEC] Tsvart last call review of draft-ietf… Joe Touch
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Brian E Carpenter
- Re: [OPSEC] Tsvart last call review of draft-ietf… Brian E Carpenter
- Re: [OPSEC] Tsvart last call review of draft-ietf… Joe Touch
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Joe Touch
- Re: [OPSEC] Tsvart last call review of draft-ietf… Christopher Morrow
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Christopher Morrow
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Joe Touch
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Brian E Carpenter
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Christopher Morrow
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Mark Andrews
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … David Farmer
- Re: [OPSEC] Tsvart last call review of draft-ietf… Gert Doering
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Joe Touch
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Joe Touch
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Gert Doering
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Joe Touch
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Nick Hilliard
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Nick Hilliard
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Joe Touch
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Gert Doering
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Joe Touch
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Joe Touch
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Nick Hilliard
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Gert Doering
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Joe Touch
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Stewart Bryant
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Joe Touch
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Joe Touch
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Ole Troan
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Nick Hilliard
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Nick Hilliard
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Gert Doering
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Gert Doering
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Randy Bush
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Ole Troan
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Stewart Bryant
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Gert Doering
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Ole Troan
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Gert Doering
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Christian Huitema
- [OPSEC] HbH flags [Tsvart last call review of dra… Brian E Carpenter
- Re: [OPSEC] HbH flags [Tsvart last call review of… Joe Touch
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Joe Touch
- Re: [OPSEC] HbH flags [Tsvart last call review of… Brian E Carpenter
- [OPSEC] game over, EH [Tsvart last call review of… Brian E Carpenter
- Re: [OPSEC] HbH flags [Tsvart last call review of… Joe Touch
- [OPSEC] ECMP [Tsvart last call review of draft-ie… Brian E Carpenter
- Re: [OPSEC] HbH flags [Tsvart last call review of… Brian E Carpenter
- Re: [OPSEC] game over, EH [Tsvart last call revie… Stephen Farrell
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Brian E Carpenter
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Fernando Gont
- Re: [OPSEC] game over, EH [Tsvart last call revie… Fernando Gont
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Fernando Gont
- Re: [OPSEC] HbH flags [Tsvart last call review of… Joe Touch
- Re: [OPSEC] HbH flags [Tsvart last call review of… Christopher Morrow
- Re: [OPSEC] HbH flags [Tsvart last call review of… Joe Touch
- Re: [OPSEC] HbH flags [Tsvart last call review of… Joe Touch
- Re: [OPSEC] HbH flags [Tsvart last call review of… Christopher Morrow
- Re: [OPSEC] HbH flags [Tsvart last call review of… Christopher Morrow
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Gert Doering
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Gert Doering
- Re: [OPSEC] HbH flags [Tsvart last call review of… Gert Doering
- Re: [OPSEC] game over, EH [Tsvart last call revie… Gert Doering
- Re: [OPSEC] [Tsv-art] game over, EH [Tsvart last … Brian Trammell (IETF)
- Re: [OPSEC] game over, EH [Tsvart last call revie… Stewart Bryant
- Re: [OPSEC] ECMP [Tsvart last call review of draf… Stewart Bryant
- Re: [OPSEC] HbH flags [Tsvart last call review of… Ole Troan
- Re: [OPSEC] ECMP [Tsvart last call review of draf… Stewart Bryant
- Re: [OPSEC] ECMP [Tsvart last call review of draf… Ole Troan
- Re: [OPSEC] game over, EH [Tsvart last call revie… Stewart Bryant
- Re: [OPSEC] game over, EH [Tsvart last call revie… Gert Doering
- Re: [OPSEC] HbH flags [Tsvart last call review of… Stewart Bryant
- Re: [OPSEC] ECMP [Tsvart last call review of draf… Stewart Bryant
- Re: [OPSEC] game over, EH [Tsvart last call revie… Stewart Bryant
- Re: [OPSEC] ECMP [Tsvart last call review of draf… Gert Doering
- Re: [OPSEC] ECMP [Tsvart last call review of draf… Ole Troan
- Re: [OPSEC] [Tsv-art] game over, EH [Tsvart last … Spencer Dawkins at IETF
- Re: [OPSEC] HbH flags [Tsvart last call review of… Joe Touch
- Re: [OPSEC] HbH flags [Tsvart last call review of… Joe Touch
- Re: [OPSEC] HbH flags [Tsvart last call review of… Joe Touch
- Re: [OPSEC] HbH flags [Tsvart last call review of… Joe Touch
- Re: [OPSEC] HbH flags [Tsvart last call review of… Ole Troan
- Re: [OPSEC] HbH flags [Tsvart last call review of… Stewart Bryant
- Re: [OPSEC] HbH flags [Tsvart last call review of… Joe Touch
- Re: [OPSEC] ECMP [Tsvart last call review of draf… Fernando Gont
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Smith, Donald
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Nick Hilliard
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Ole Troan
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Fernando Gont
- Re: [OPSEC] game over, EH [Tsvart last call revie… C. M. Heard
- Re: [OPSEC] game over, EH [Tsvart last call revie… Jared Mauch
- Re: [OPSEC] [Tsv-art] game over, EH [Tsvart last … Jared Mauch
- Re: [OPSEC] game over, EH [Tsvart last call revie… C. M. Heard
- Re: [OPSEC] game over, EH [Tsvart last call revie… Smith, Donald
- Re: [OPSEC] game over, EH [Tsvart last call revie… Gert Doering
- Re: [OPSEC] game over, EH [Tsvart last call revie… Nico Williams
- Re: [OPSEC] ECMP [Tsvart last call review of draf… Brian E Carpenter
- Re: [OPSEC] ECMP [Tsvart last call review of draf… Nick Hilliard
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Brian E Carpenter
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Nick Hilliard
- Re: [OPSEC] ECMP [Tsvart last call review of draf… Brian E Carpenter
- Re: [OPSEC] [Tsv-art] game over, EH [Tsvart last … Eric Rescorla
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Jared Mauch
- Re: [OPSEC] ECMP [Tsvart last call review of draf… Fernando Gont
- Re: [OPSEC] [Tsv-art] game over, EH [Tsvart last … Christopher Morrow
- Re: [OPSEC] HbH flags [Tsvart last call review of… Christopher Morrow
- Re: [OPSEC] [Tsv-art] Tsvart last call review of … Gert Doering
- Re: [OPSEC] [Tsv-art] game over, EH [Tsvart last … Eric Rescorla
- Re: [OPSEC] [Tsv-art] game over, EH [Tsvart last … Jared Mauch
- Re: [OPSEC] [Tsv-art] game over, EH [Tsvart last … Eric Rescorla
- Re: [OPSEC] [Tsv-art] game over, EH [Tsvart last … Joe Touch
- Re: [OPSEC] HbH flags [Tsvart last call review of… Pete Resnick
- Re: [OPSEC] [Tsv-art] game over, EH [Tsvart last … Jared Mauch
- Re: [OPSEC] [Tsv-art] game over, EH [Tsvart last … Jared Mauch
- Re: [OPSEC] HbH flags [Tsvart last call review of… Jared Mauch
- Re: [OPSEC] [Tsv-art] game over, EH [Tsvart last … Joe Touch
- Re: [OPSEC] [Tsv-art] game over, EH [Tsvart last … Nico Williams
- [OPSEC] OT: TCP session lifetime - Re: [Tsv-art] … Jared Mauch
- Re: [OPSEC] OT: TCP session lifetime - Re: [Tsv-a… Nico Williams
- Re: [OPSEC] [Tsv-art] game over, EH [Tsvart last … Eric Rescorla
- Re: [OPSEC] OT: TCP session lifetime - Re: [Tsv-a… Gert Doering
- [OPSEC] Engaging constructively [HbH flags [Tsvar… Alissa Cooper
- Re: [OPSEC] ECMP [Tsvart last call review of draf… Wes Hardaker
- Re: [OPSEC] ECMP [Tsvart last call review of draf… Brian E Carpenter
- Re: [OPSEC] ECMP [Tsvart last call review of draf… Wes Hardaker
- Re: [OPSEC] ECMP [Tsvart last call review of draf… Fernando Gont