Created attachment 114025 [details] dmesg when booting with systemd.log_level=debug systemd.log_target=kmsg log_buf_len=1M I have an Atom NM10-based industrial PC with three e1000e devices and a PEAK CANbus device (PCI ID 001c:0008) providing the interface can0. After updating from 216 to 219, systemd-networkd is unable to get my e1000e-devices up and running. I don't have any configuration for can0 within /etc/systemd/network. Two files in /etc/systemd/network, 10-eth0.network and 10-eth1.network. System booted with net.ifnames=0. No service is configured to do something with can0 or eth2. # cat /etc/systemd/network/10-eth* [Match] Name=eth0 [Network] Address=10.20.0.3/24 Gateway=10.20.0.1 [Match] Name=eth1 [Network] Address=10.30.0.3/24 Gateway=10.30.0.1 After booting, eth0 and eth1 are not configured nor upped. After `systemctl restart systemd-networkd´, eth0 and eth1 are configured, but not upped. can0 is not upped either. systemd-networkd.afterboot.txt is systemd-networkd journal (with loglevel debug) after boot, and systemd-networkd.afterrestartservice.txt is the journal for `systemctl restart systemd-networkd´. dmesg.txt is dmesg when booting with systemd.log_level=debug systemd.log_target=kmsg log_buf_len=1M The system doesn't have ipv6 enabled, so that triggers some error messages. # systemctl --version systemd 219 +PAM -AUDIT -SELINUX +IMA -APPARMOR +SMACK -SYSVINIT +UTMP -LIBCRYPTSETUP -GCRYPT -GNUTLS +ACL +XZ -LZ4 +SECCOMP +BLKID -ELFUTILS +KMOD -IDN
Created attachment 114026 [details] systemd-analyze dump
Created attachment 114027 [details] journal of systemd-networkd after boot
Created attachment 114028 [details] journal of systemd-networkd after `systemctl restart systemd-networkd´
I see now that my issues of not getting interfaces up was caused by missing IPv6 support on the machine. The same issue happened even when disabling the can interface. So I changed the title of the bug - it would be nice feature to have systemd-networkd support setting up CAN devices.
I hope I'm not too spammy, but maybe I should mention that it seems that having a can device and not having IPv6 both made sure that eth0 and eth1 didn't get up. IPv6 available, no can devices present -> everything works can0 present and IPv6 available -> systemd-networkd during boot stops because of can0. Both configure and upping works if manually running `systemctl restart systemd-networkd´ afterwards, I think... can0 available and no IPv6 -> systemd-networkd stops during boot because of can0. `systemctl restart systemd-networkd´ does not work afterwards either, but that is because of lacking IPv6.
Implemented in https://github.com/systemd/systemd/commit/06828bb617.
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