Dear Jordan, thanks for your email.
On 12.12.19 20:54, Jordan Geoghegan wrote: >> OpenBSD is a guest VM on a debian buster host using virtual e1000 >> network card ("Intel 82540EM" driver in openbsd). No firewall >> in between. The VM is a tor-exit node. > > I've heard others recommend using the vio driver over the em driver numerous > times on here if running a virtualized instance. You may have a better time > than you are now by using the VirtIO drivers. > The intel nic emulation can sometimes have issues. Better to use an interface > designed for virtualized environments. I'm testing both. I thought I might have some throughout issues with the virtio driver and switched to the e1000 for testing. Unfortunately the e1000 driver leads to openbsd kernel panics > 200 Mbit/s so I switched back to the virtio driver which is more stable. The "error: recvfrom xxx failed: Host is down" problem is unaffected by whichever NIC driver I use. Cheers, Winter