Re: Last Call: <draft-ietf-6man-rfc1981bis-04.txt> (Path MTU Discovery for IP version 6) to Internet Standard

otroan@employees.org Fri, 03 February 2017 08:38 UTC

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Subject: Re: Last Call: <draft-ietf-6man-rfc1981bis-04.txt> (Path MTU Discovery for IP version 6) to Internet Standard
Date: Fri, 3 Feb 2017 09:38:28 +0100
In-Reply-To: <1859B1D9-9E42-4D65-98A8-7A326EDDE560@netapp.com>
To: "Eggert, Lars" <lars@netapp.com>
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Lars,

> the last paragraph of the introduction reads:
> 
>   An extension to Path MTU Discovery defined in this document can be
>   found in [RFC4821].  It defines a method for Packetization Layer Path
>   MTU Discovery (PLPMTUD) designed for use over paths where delivery of
>   ICMP messages to a host is not assured.
> 
> Given that ICMP delivery cannot be assured over the vast majority of paths in the current Internet, should this document make a recommendation to implement RFC4821?

Could you please substantiate that assertion?

Best regards,
Ole