Messages in this thread | | | From | (Alan Cox) | Subject | Re: 2.2.2-ac7 TCP ignores ICMP host unreachable ?? | Date | Thu, 4 Mar 1999 01:38:47 +0000 (GMT) |
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> 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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