Grex General Conference

Item 4: Grex System Problems - Fall 2015/Winter 2016

Entered by cfadm on Thu Dec 31 16:42:13 2015:

1 new of 223 responses total.

#216 of 223 by kentn on Sat Nov 14 22:58:12 2020:

I noted today that one of my computers wouldn't connect to grex via
ssh while another would.  They are different versions of FreeBSD (11.4
worked, 12.1 didn't). Same setups of ssh_config.

Anyway changing the MTU for 12.1 fixed it, which is a bit weird.  I had
to edit /etc/dhclient.conf and supersede the interface-mtu setting that
normally is set to 1500 by DHCP and setting it to 1400 helped.  Probably
this is due to the ciphers that get picked in the ssh connection.
Each computer picks a different one (using the same setup).  So more
investigations to do.

I had noted someone else had seen something similar in the past couple
weeks.

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