I have a situation here. Running 3 identical containers, just different name and port. Trying to add one more fails to let the container have connection to the outside world, hence makes the container useless. Container is created, it starts, but in the journal I get such errors…
systemd-udevd: veth9c4b829: Failed to get link config: No such device
Any idea why this is happening? It did work on other containers.
Running Ubuntu Linux 20.04.3 Docker version 20.10.12, build e91ed57
On top of that… Adding such a device manually and bringing it up does not help the container get networking.
ip link add dev veth9c4b829 type veth ip link set veth9c4b829 up