Re: 2.2.2-ac7 TCP ignores ICMP host unreachable ??

[Alan Cox]

> But my memory tells me this:
> 
>   - Host Unreachable should be ignored for an *existing* TCP connection
>     (it is considered an transient error)
>   - Host Unreachable should make a TCP connection *setup* fail

Its a heuristic some systems use. It breaks horribly on certain kinds of
ISDN dial on demand networks, and the RFC says its a temporary error 

Alan

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