iPXE to redirect boot to another PXE server

[Kirioss]

Thank you, interesting, I will try, but it may not work for all my PXE solutions.

The problem is, as fas as I understood how my other PXE solutions are working (commercial products), they expect a request on port 4011 (proxyDHCP) as if my DHCP was only configured with option 60 "PXEClient" and target IP in option 43. I think this is because they create "on the fly" the bootfile given to the client.

Is there a way to make this kind of request from iPXE, regardless what DHCP gave to the client ? (a unicast proxyDHCP request : DHCPREQUEST with proper PXEClient:Arch:xxxxx:UNDI:yyyzzz) ?

Thank you