I can't capture anything with the filter (udp port 67) or (udp port 68)

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Thank you!! I left it working and captured one message from 0.0.0.0. to 255.255.255.255. Do you have any recommendations what should I do to capture more messages, what actions use these ports? Well honestly I do not really know what I am trying to achieve, I am just following the instructions in the book Computer networks. It is an exercise on DHCP and I am trying to understand it.

Depending on the OS you usually have some option to force a renew of the DHCP lease. This allows you to capture them 'on demand'.

So the task assumed capturing and studying DHCP DORA sequence as I understand it.

But to capture all 4 packets you need some prerequisites:

• The PC you're capturing on has to be configured with automatic IP (not manually set).
• You need working DHCP server in the network (this could be your home router as well).

Then you can start capture and do what @Jaap recommends - manual IP address renew. To capture someone else's DORA sequence you have to arrange more complex setup with port mirroring because not all of these packets are broadcast.