On Wed, Apr 01, 2026 at 04:08:14PM -0600, Luke Call wrote: > I created a debian VM and vmctl starts it successfully (thanks to > earlier threads on that topic!). At first, the network worked fine. > Then I don't know what I did, but after restarting the VM, > the network would not work (can't ping anything from inside it, > nmap can't see the VM at all). Even recreating > the VM image and starting that--no network. I noticed an error > on the host, in /var/log/messages from around the time I started > the failing VM: > > /bsd: arp: attempt to add entry for 100.64.1.3 on tap0 by [ipv6 address] on tap1 > > ...repeated many times. But I don't know my way around arp or tap interfaces. > > Rebooting fixed it. But for next time, is there a better way for me to > address this? > > Thanks much, > Luke Call > trace down where the packets get lost: 1. tcpdump -i vio0 inside the vm 2. tcpdump -i tapX on the host 3. tcpdump -i trunk/bridge/veb on the host (if using that) 4. tcpdump -i egress interface on the host ... etc ...
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