Public bug reported:
Hello,
It happened now twice for me that after a "unattended update" the linux
kernel is missing routes which were announced via BGP. From my point of
view, the problem is that networkd is restarted(?). Which leads to a
deletion of the routes in linux kernel.
# cat /var/log/unattended-upgrades/unattended-upgrades.log | grep "upgraded:"
2022-04-08 06:45:58,859 INFO Packages that will be upgraded: cloud-init dpkg
libarchive13 liblzma5 libudisks2-0 libutempter0 linux-generic
linux-headers-generic linux-image-generic patch tmux udisks2
update-notifier-common xz-utils
2022-04-09 06:11:51,294 INFO Packages that will be upgraded:
libboost-iostreams1.74.0 libboost-thread1.74.0 libudisks2-0 libx11-6
libx11-data libx11-dev libx11-xcb1 ltrace python3-distutils python3-gdbm
python3-lib2to3 udisks2 update-notifier-common
2022-04-10 06:09:12,653 INFO Packages that will be upgraded: gzip liblzma5
libnss-mymachines libnss-systemd libpam-systemd libsystemd0 libudev1 systemd
systemd-container systemd-sysv systemd-timesyncd udev update-notifier-common
xz-utils
2022-04-11 06:26:31,366 INFO Packages that will be upgraded: libjpeg8
update-notifier-common
# systemctl status frr
● frr.service - FRRouting
Loaded: loaded (/lib/systemd/system/frr.service; enabled; vendor preset:
enabled)
Active: active (running) since Fri 2022-04-08 02:00:16 UTC; 3 days ago
# systemctl status systemd-networkd.service
● systemd-networkd.service - Network Configuration
Loaded: loaded (/lib/systemd/system/systemd-networkd.service; enabled;
vendor preset: enabled)
Active: active (running) since Sun 2022-04-10 06:09:17 UTC; 1 day 3h ago
# vtysh -c "show ip route" | grep "B>"
B>* 10.3.0.0/16 [20/0] via 172.25.84.114, wg-00001-dc-003, weight 1, 3d08h05m
B>* 10.4.0.0/16 [20/0] via 172.25.84.122, wg-00001-dc-004, weight 1, 1d15h36m
B>* 172.20.0.0/16 [20/0] via 10.0.240.129, wg-00001-int, weight 1, 3d08h05m
# ip route | grep /16
10.1.0.0/16 dev ethGeoInternal proto kernel scope link src 10.1.254.253
As you can see 10.3.0.0/16 and 10.4.0.0/16 is missing in "ip route"
** Affects: frr (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1968550
Title:
unattended updates, missing routes
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