DHCP: ARP issue, FR2.x vs FR 3.x

[Alan DeKok]

Fajar A. Nugraha wrote:
> Setting "user=root" in radiusd.conf fixed the problem.

  Ah, yes.

> Weird, since FR3 works just fine running as freerad, and it didn't
> even have cap_net_admin set.

  FR3 doesn't update the ARP tables.  That code needs to be ported from
the v2.1.x branch.

  Updating the ARP tables is a whole lot simpler than opening a raw
socket so that it can create unicast UDP packets.  I'll see if I can
update the sites-available/dhcp server to note that.

  Alan DeKok.