I've written a small script to reproduce the issue and I got following results using VMs from Linode:
- broken with systemd=237-3ubuntu10.9 on Ubuntu 18.04, 4.15.0-43-generic #46-Ubuntu. - broken with systemd=237-3ubuntu10.11 on Ubuntu 18.04, 4.15.0-43-generic #46-Ubuntu. - broken with systemd=239-7ubuntu10.6 on Ubuntu 18.10, 4.18.0-13-generic #14-Ubuntu. The way I used to reproduce the issue was to 1) start Linode VM, 2) run `./systemd-wg 23`. For some reason, 23 is the magic number of peers: 22 peers, 24 peers and 1500 peers work okay, but 23 peers trigger the bug. Given the fact that 239 is also affected, I'm submitting it upstream. ** Attachment added: "bash script to reproduce the issue" https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1811149/+attachment/5228725/+files/systemd-wg -- 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
