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831106a875
Some ProxyDHCP implementations seem to violate the PXE specification by expecting the client to retain options from the ProxyDHCPOFFER rather than issuing a separate ProxyDHCPREQUEST. Work around such broken clients by retaining the ProxyDHCPOFFER packet, and proceeding to a ProxyDHCPREQUEST only if the ProxyDHCPOFFER does not already contain PXE options. Signed-off-by: Michael Brown <mcb30@ipxe.org>