Re: RE: hotmail not dealing with ECN

James Sutherland (jas88@cam.ac.uk)
Fri, 26 Jan 2001 17:14:12 +0000 (GMT)


On Fri, 26 Jan 2001, Lars Marowsky-Bree wrote:

> On 2001-01-26T16:04:03,
> "Randal, Phil" <prandal@herefordshire.gov.uk> said:
>
> > We may be right, "they" may be wrong, but in the real world
> > arrogance rarely wins anyone friends.
>
> So you also turn of PMTU and just set the MTU to 200 bytes because broken
> firewalls may drop ICMP ?

No - a workaround is used to detect such "black holes". Much as I was
advocating for ECN, in fact. Also note that some firewalls (Microsoft's in
particular) DO drop ICMP packets.

James.

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