/var/log/kern.log contains these lines:
Jul 19 09:15:38 debian kernel: [69157.444725] wireguard: module
verification failed: signature and/or required key missing -
tainting kernel
Jul 19 09:15:38 debian kernel: [69157.449554] wireguard:
WireGuard 1.0.20200712 loaded. See www.wireguard.com for
information.
Jul 19 09:15:38 debian kernel: [69157.449555] wireguard:
Copyright (C) 2015-2019 Jason A. Donenfeld <ja...@zx2c4.com>.
All Rights Reserved.
This is an old HP amd64 running as noted:
$ uname -a
Linux debian.localdomain 4.19.0-14-amd64 #1 SMP Debian
4.19.171-2 (2021-01-30) x86_64 GNU/Linux
Principal symptom: pervasive slowdown of all connections to
remote hosts, notice first with my smtp smart host.
I am resigned to reinstalling my VPN, which will bring the
latest Wireguard with it iirc, but are those kern.log lines
consistent with my complaint/report of slowness?
Thank you,
--
...a society must incorporate the rationalizing
power symbolized by scientific knowledge, for
otherwise it will be a fatally split society-
split between a powerful elite and the
disenfranchised mass. To this we add now: an
irrational elite is the most dangerous of all.
Holton, Gerald. 1985. On the Integrity of
Science: The Issues Since Bronowski. Leonardo
18 (4), Special Issue: Jacob Bronowski: A
Retrospective (1985): 229-232.