> I've got an old pipe connected to a couple of public servers. > That pipe is going dark. > > I've got a new pipe from a new provider with a block of new > IP addresses. > > I'm trying to transition to the new IP block without shutting > down the old so I can have both up while the DNS changes > propagate. > > My thought is to set up a forwarder box using iptables to > port forward the old IP's to the new IP's. > > Consider old network a.a.a.0 and new network b.b.b.0 > > I want to map all ports on a.a.a.2 to b.b.b.2 and all ports > on a.a.a.3 to > b.b.b.3 > > Can something like this be done using iptables if I only > have 1 NIC card and I do not have a physically separate > subnet? Why not use "ifconfig" (or "ip addr") to add multiple IP addresses (old and new) to the NIC ? Then, when the transition is complete, you just remove the old addresses. Gr, Rob
