On 2026-03-29, Polarian <[email protected]> wrote: > I have a FreeBSD server behind an OpenBSD router. I have a bunch of > IPv4 addresses but using ARP would require me to lose a few, and > as its a /29 this would not be ideal. FreeBSD does support IPv6 nexthop, > and I have had others tell me they use it, and from debugging it doesn't > seem FreeBSD is the issue here.
Assume you have a /29 from the ISP that is routed to you via a separate /32 link? There are some games you can play to maximise use of this before we get v6 nexthop. If you're using nat(/rdr) for some hosts, you can use the network and broadcast addresses for these. Slightly dirtier but if you don't need to contact addresses each side of your allocation (i.e. other customers of your ISP) you can configure a wider subnet than you really have and make use of net/bcast addresses directly. Or you can configure a separate rfc1918 network on a normal ethernet interface, add a static route for the /32 pointing over that, and configure the routable address on a dummy interface (lo1 or vether or something would do). -- Please keep replies on the mailing list.
