Hi Fred,
Inline.....
Ron
> Hi Juan Carlos,
>
> Final passage of Section 3.1 says:
>
> ?However, in an alternative configuration, the GRE ingress MAY:
>
> o discard the IPv6 packet
>
> o send an ICMPv6 Packet Too Big (PTB) [RFC4443] message to the IPv6
> packet source. The MTU field in the ICMPv6 PTB message is set to
> the GMTU.?
>
> This means that there may be circumstances when the GRE ingress sends a
> PTB reporting a size less than 1280. According to RFC2460, Section 5, the
> standard behavior for a host that receives such a PTB is:
>
> ?In that case, the IPv6 node
> is not required to reduce the size of subsequent packets to less than
> 1280, but must include a Fragment header in those packets?
>
> So, hosts that obey RFC2460 Section 5 will see a perpetual black hole if the
> GMTU is smaller than 1280 which is probably not what we want.
[RPB]
All true. This is why the WG decided to make this the alternative behavior and
not the default behavior.
>
> ?draft-templin-6man-linkadapt? attempts to provide guidance to hosts on
> how to react to PTB messages that report a small size. But, as of right now,
> RFC2460 Section 5 is the normative behavior.
[RPB]
Absolutely correct. The procedures described in Section 5 or RFC 246 are
normative.
I don't how this impacts the WG's LC decision regarding the current draft.
Ron
>
> Thanks ? Fred
> [email protected]
>
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