I currently have a xen installation with four NICs installed. This system has been working fine for some time with my current ISP.
I am planning a move to a new ISP and am currently planning how I am going to go about moving my network over to the new ISP. Maybe I've analyzed it to the point that I've confused myself, but I can't seem to think of a way to perform the migration.
I currently use pci hide to hide a physical NIC from the Dom0. This NIC is passed to a firewall DomU. Two other NICs are passed to the firewall DomU to create a standard three NIC firewall. The fourth NIC in the Dom0 is on a separate subnet (not part of the firewall) and is used only for managment of the Dom0.
I would like to setup a firewall DomU on the new ISP and then migrate the DomUs to the new firewall one at a time. I am getting tripped up on the fact that my server can't have two gateway addresses active at one time.
Any thoughts or suggestions on how I could go about this migration?
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