The following is a description + solution of an issue I encountered; hopefully this will help folks who are having the same issue.
I recently bought an RPI to run Umbrel on. About once a day, the dashboard of my node was unreachable, same for SSH-access. After some log diving, I found out that my node did not have an IP-address assigned anymore to the ETH0 interface.
It appears that dhcpcd always segfaulted during the boot process of my node:
Apr 26 16:44:29 umbrel dhcpcd: veth9229806: adding address fe80::5fd4:447:b20c:71bf Apr 26 16:44:29 umbrel dhcpcd: route socket overflowed - learning interface state Apr 26 16:44:29 umbrel dhcpcd: veth82fb0c0: carrier acquired Apr 26 16:44:29 umbrel dhcpcd: veth82fb0c0: IAID 6d:f2:d2:6e Apr 26 16:44:29 umbrel systemd: dhcpcd.service: Main process exited, code=killed, status=11/SEGV
The consequence of this was that the node did not get a new IP once the dhcp-lease expired. Furthermore, it seems the segfault happened at the moment docker networking was doing its thing (creating many virtual network interfaces) and I believe that dhcpcd doesn’t like that.
As a solution, I configured the following (I think one of these will suffice though):
- Configure static IP
- Add the following to /etc/dhcpcd:
Hope this helps in case you encounter a similar issue!