- Works in TAP mode, but currently doesn't work in TUN mode.
- You may need to create the TAP adapter first if it doesn't already exist, i.e. `ifconfig tap0 create`.
- OpenBSD is not capable of listening on both IPv4 and IPv6 at the same time on the same socket (unlike FreeBSD and NetBSD). This affects the `Listen` and `AdminListen` configuration options. You will need to set `Listen` and `AdminListen` to use either an IPv4 or an IPv6 address.
- You may consider using [relayd](https://man.openbsd.org/relayd.8) to allow incoming Yggdrasil connections on both IPv4 and IPv6 simultaneously.