I was able to configure /32 for ipv4. in the example below, I use vlan10 and a private address for testing.
Each host in separated using PVLAN. On the openbsd (router) side, I just do ifconfig vlan10 inet 172.16.216.1/32 route add -inet 172.16.216.0/24 -llinfo -link -static -iface vlan10 On a linux box, I can do: ip addr add 172.16.216.3 dev eno1 peer 172.16.216.1/32 Now for ipv6 On the linux side: ip addr add xxxx:xxxx:0:1000:1::1/64 dev eno1 ip route add default via fe80::1 dev eno1 On the OpenBsd side: ifconfig vlan10 inet6 fe80::1 route add -inet6 xxxx:xxxx:0:1000::/64 fe80::aaaa:bbbb:cccc:dddd%vlan10 where aaaa:bbbb:cccc:dddd is the mac address of the linux host Now the problem is that I will have to add a route entry for every host and know their link local address. I don't think there is any workaround to this. Except adding a second, pre-defined link local address to the linux host. Regards -- Nicolas Goy Developer and Engineer Goyman SA
