Re: [spring] Question about SRv6 Insert function

Robert Raszuk <robert@raszuk.net> Thu, 05 September 2019 08:29 UTC

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From: Robert Raszuk <robert@raszuk.net>
Date: Thu, 5 Sep 2019 10:28:48 +0200
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To: Fernando Gont <fgont@si6networks.com>
Cc: Ole Troan <otroan@employees.org>, Ron Bonica <rbonica=40juniper.net@dmarc.ietf.org>, "spring@ietf.org" <spring@ietf.org>, "6man@ietf.org" <6man@ietf.org>, Suresh Krishnan <suresh.krishnan@gmail.com>, draft-voyer-6man-extension-header-insertion <draft-voyer-6man-extension-header-insertion@ietf.org>, draft-ietf-spring-srv6-network-programming <draft-ietf-spring-srv6-network-programming@ietf.org>
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Subject: Re: [spring] Question about SRv6 Insert function
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Hi Fernando,


> If folks want to do EH insertion, the #1 step is to publish a document
> that updates RFC8200 such that the "EHs must not be inserted..." is
> replaced with something else or eliminated.


I have very basic question to close this debate.

Is IP encapsulation of the packet allowed by IPv6 specs or not ?

If it is I see no issue with any documents you quote since when I add a new
IPv6 header I can add any field to it. Moreover when I see myself as
destination address of the packet RFC8200 verbatim allows to add, delete or
modify EHs. I hope you agree with it.

If IP encapsulation is forbidden by IPv6 RFCs please provide a quote and
ref.

Many thx,
R.