Mick Hosegood wrote: > I'm trying to fathom the mechanics of the PARAM_REQUEST_LIST entry in the > DHCP client's /etc/default/dhcpagent file. > Apparently it "Specifies a list of comma-separated integer values > of options for which the client would like values" > How does the server (dhcpd) obtain the requested values to pass back to the > client?
They're in the DHCPDISCOVER and DHCPREQUEST messages. > It does not seem to be anything to do with the server dhcp macros, and the > documentation is vague. Not all DHCP servers and clients have the same features, and the DHCP server that comes with OpenSolaris is independent from the client. I believe that the server on OpenSolaris always tries to return the data that you configure into the macros for a given client, regardless of what the client might or might not ask for. (If the packet grows too large, it might prefer to keep the ones requested and discard unrequested options, but I'm not sure on that.) Other servers are different, and are able to return data conditionally, based on requested options. ISC's dhcpd is like this; see dhcp-eval(5) on a system with that server installed. -- James Carlson 42.703N 71.076W <carls...@workingcode.com> _______________________________________________ networking-discuss mailing list networking-discuss@opensolaris.org
