Originally Posted By: Roger
Originally Posted By: tman
No. Its not part of the spec. The best you can do is release your DHCP lease and ask for another one whilst hoping its different.


DHCPDECLINE. Quite how you fake it, I don't know.

The side effect of doing a DHCPDECLINE is what Tony wants but there are other parts to it which won't be good.

Originally Posted By: RFC2131
4.3.3 DHCPDECLINE message

If the server receives a DHCPDECLINE message, the client has discovered through some other means that the suggested network address is already in use. The server MUST mark the network address as not available and SHOULD notify the local system administrator of a possible configuration problem.


He'll just progressively use up more and more addresses. Potentially also annoying whoever runs the DHCP server if it does log a warning or error.