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Delay in reestablishing screen/ssh connections

From: JCA
Subject: Delay in reestablishing screen/ssh connections
Date: Mon, 28 Nov 2005 07:33:05 -0800

    I am using a combination of several tools, so I am not sure this is the right forum for my questions. My apologies if it isn't.

    I have a Linux computer A that I have to put to hibernate on a regular basis. From A, using both screen and autossh, I open ssh connections to two remote Linux boxes, B and C. Both B and C are in the same remote LAN; the only difference is that B has two NICs: one for the external world (the one I use to access it), the other for the LAN, whereas C has just one, for the LAN.

    The issue is the following: When I bring A back from hibernation, shels that I had established with B become active again in a matter of seconds, at most, whereas those established with C remain frozen for some 10 minutes, before becoming responsive again. On the other hand, immediately after reviving A I can open new ssh connections to C without any problems. Indeed, I can attach straight away, without any problems, to the screen sessions that were running when A was put to hibernate.

    Anybody have ideas about what might be going on, and how to eliminate that 10 minutes waiting before connections to C get reestablished?

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