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Re: [v6ops] [EXTERNAL] Re: [IPv6] [OPSEC] Why folks are blocking IPv6 extension headers? (Episode 1000 and counting) (Linux DoS)

Fernando Gont <fernando@gont.com.ar> Fri, 26 May 2023 15:36 UTC

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Date: Fri, 26 May 2023 17:36:16 +0200
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To: Warren Kumari <warren@kumari.net>, Brian E Carpenter <brian.e.carpenter@gmail.com>
Cc: Albert E Manfredi <albert.e.manfredi@boeing.com>, IPv6 Operations <v6ops@ietf.org>, 6man <ipv6@ietf.org>, opsec@ietf.org
References: <11087a11-476c-5fb8-2ede-e1b3b6e95e48@si6networks.com> <CALx6S343f_FPXVxuZuXB4j=nY-SuTEYrnxb3O5OQ3fv5uPwT8g@mail.gmail.com> <CAN-Dau1pTVr6ak9rc9x7irg+aLhq0N8_WOyySqx5Syt74HMX=g@mail.gmail.com> <a087b963-1e12-66bf-b93e-5190ce09914b@si6networks.com> <CALx6S349nNA8L5+_1hrbWayqp8GfTYypWy_SP57c_Xxams=csg@mail.gmail.com> <51a066b3-4b4c-d573-ffbe-d6b44a4f193f@gont.com.ar> <a411a1b0-c521-c456-3d44-d99a1cc0975b@gmail.com> <CWXP265MB5153E4687BE45480DBC5A531C2439@CWXP265MB5153.GBRP265.PROD.OUTLOOK.COM> <27d28224-0cb0-eec2-8d54-f0d175596c85@gmail.com> <f5758380-9967-b67b-744d-dc36b7b599ab@si6networks.com> <72784f8e65f34bcc9f5652c0a553c70c@boeing.com> <CALx6S373P2X-JRbCNpOCGuq_Cum0+OzJFRBkuQ64h5R52B7Dhw@mail.gmail.com> <222731ea012b4b0ebd7a51f72b5bcd40@boeing.com> <dd61024e-1bd8-ff3d-216f-22cc7600ad10@gmail.com> <CAHw9_iJyXiT=O5cMyy08bVq+U7VTtKTkR_60OfvrcCng8Joe5w@mail.gmail.com>
From: Fernando Gont <fernando@gont.com.ar>
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Subject: Re: [v6ops] [EXTERNAL] Re: [IPv6] [OPSEC] Why folks are blocking IPv6 extension headers? (Episode 1000 and counting) (Linux DoS)
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Hi, Warren,

On 26/5/23 11:03, Warren Kumari wrote:

> 
> 
> On Thu, May 25, 2023 at 11:13 PM, Brian E Carpenter 
> <brian.e.carpenter@gmail.com <mailto:brian.e.carpenter@gmail.com>> wrote:
> 
[....]
> 
>     A well-implemented host will not be troubled by unkown extension
>     headers or options.
> 
> 
> Indeed. However, not all hosts are well-implemented.

Indeed. Datapoint: 
https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=IPv6+extension+header

Smarter searching/keywords will at least double the results.


-- 
Fernando Gont
e-mail: fernando@gont.com.ar
PGP Fingerprint: 7F7F 686D 8AC9 3319 EEAD C1C8 D1D5 4B94 E301 6F01

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