DCHPREQUEST/DHCPACK and DHCPREQUEST/DHCPREPLY

[francois-maillard]

I added support for the DCHPREQUEST/DHCPACK (IPv4) and DHCPREQUEST/DHCPREPLY (IPv6) flows.

[avisnevschi]

@matejv @ArnesSI @francois-maillard I've just checked, and it seems like ths script is still only generating DHCP Discover, waiting for DHCP Offer, print the result and stops here.
I tried to TCPDUMP all packets on interface, and I see only DHCP Discover / Offer, there is nothing regarding Request / Ack. Even in Debug mode, I don't see anything regarding Request/Ack packets... Trying to modify the code, but can't figure it out..

[avisnevschi]

@matejv @ArnesSI @francois-maillard
Is there anybody who is still working or watching this project?

[matejv]

Sorry for no replies, busy with other projects...

I'll take a look at the pull request over the weekend.

@francois-maillard @avisnevschi What are you trying to achieve by going further with the DHCP request flow? Initially I developed this tool to just check if DHCP server responds (and how quickly) to monitor some performance issues we had, so I never felt the need to do anything more than that.

[avisnevschi]

@matejv Thanks!

I think it is good thing to test all DHCP Server answers, and in generally if the whole processes of obtaining IP via DHCP will be done, then, this tool can be used to test the whole performance of DHCP server, and the fact that it is working correctly. Moreover some DHCP Servers are not adding DHCP lease to database until they get REQUEST and answers with ACK.

So adding REQUEST/ACK to the flow will check the real performance of DHCP server with all the steps involved in this process.

[francois-maillard]

I'm writing "integration tests" for our hardware installation setup, more precisely writing tests that make sure the dynamic dns updates secured by tsig keys are written to the DNS DB. This only occurs when the lease is actually sent to the client.

[francois-maillard]

any news on that PR?

[jimsmith]

@matejv @ArnesSI @francois-maillard when will this PR be accepted, as testing DHCP for IPv6 for the REQUEST/ACK is going to help network engineers