Public bug reported: I'm running Ubuntu 18.04.1 LTS with systemd=237-3ubuntu10.9.
I have a Wireguard-based VPN server that has several peers. As soon as number of peers is 22 or lower, everything works okay. As soon as I add the 23rd peer, restart of `systemd-networkd` service fails with timeout while systemd-networkd hogs CPU. Moreover, if I reboot the box while wireguard configuration is "broken", systemd-networkd fails to apply network settings on boot and the box is no longer accessible over the network. Configuration is structured in a following way (keys are fake): ==> wg0.netdev [NetDev] Name=wg0 Kind=wireguard Description=Wireguard VPN server [WireGuard] ListenPort=4500 PrivateKey=kNl7tkhCM1Crj8RhUIn8xvwcg+UoOkw26kQjQEtZk1k= [WireGuardPeer] PublicKey=AfM1AN4IIUe5AVypFg2pcNrQmqOtZQIJLgusbkDYXkI= AllowedIPs=fd6f:b446:a2ca:0400:cb6f:b446:a2ca:bd0b/128 AllowedIPs=fd6f:b446:a2ca:cb6f:b446:a2ca::/96 # and 22 more [WireGuardPeer] like that ==> wg0.network Name=wg0 [Network] Address=fd6f:b446:a2ca:0400::1/64 [Route] Destination=fd6f:b446:a2ca:cb6f:b446:a2ca::/96 # and 22 more [Route] sections like that syslog logs are attached both for "good" and "bad" cases, sample of strace logs is also attached for "bad" case. I'm filling the issue here as the aforementioned systemd version is already out of scope of upstream bug tracker per https://github.com/systemd/systemd/blob/master/docs/CONTRIBUTING.md #filing-issues ** Affects: systemd (Ubuntu) Importance: Undecided Status: New ** Tags: networkd systemd-networkd wireguard ** Attachment added: "Archive with syslog & strace logs" https://bugs.launchpad.net/bugs/1811149/+attachment/5228066/+files/systemd-networkd-wireguard-many-peers.tar.gz -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1811149 Title: 23 wireguard peers hang systemd-networkd To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1811149/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
