connection startup issues with recent DragonFly.
A little while back someone, I forgot who, mentioned that after
rebooting the first ssh connection to a machine took several
seconds longer to get going, but all later ssh connections were
made quickly.
At the time I thought it might be sshd generating a host key or
something like that. It happens to me too every time I reboot a
test box.
But today, after upgrading my workstation to HEAD, I noticed that
the delay seems to occur to machines that are already up and running.
When I come in in the morning and click on my 'leaf' button, it takes
a few seconds before the connection is made. But if I click it again,
another connection is made immediately.
Ahhh... sounds like an ARP issue!
And indeed, if I arp -d the ARP entry to leaf on my workstation, then
ssh again, the 3 seconds delay occurs again. And after that, no delay.
Jeff, I think the arp code is dropping the packet(s) triggering the
ARP event or otherwise doing something with it so it does not reach the
target machine. Could you take a look?
-Matt
Matthew Dillon
<dillon@backplane.com>
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