On 02/08/2017 10:55 AM, otroan(_at_)employees(_dot_)org wrote:
Fernando,
Because if we did, the loophole for people to violate the standard
would disappear (talk about Segment Routing).
There is nothing stopping a future IETF from publishing a document
specifying header insertion, even if 2460bis where to ban it.
There's a "small" difference: If the standard clearly states that header
insertion is forbidden, then, a proposal to insert EHs would need to
update the corresponding standard.
Since RFC2460 is being moved to (full) Standard, that would not be minor.
I guess we all know what, and why we even got to rather ridiculous
arguments of the form "we can do EH insertion because RFC2460 does not
prohibit it" (well, yes, :-) RFC2460 does not prohibit that upon
receipt of an IPv6 packet, a router drops the IPv6 packet, and forwards
a TCP packet instead... )
Thanks,
--
Fernando Gont
SI6 Networks
e-mail: fgont(_at_)si6networks(_dot_)com
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