Why received dhcp REQUEST before dhcp DISCOVER?

[bakdop]

When I run dhcp_test, my dhcp server always receive two dhcp REQUEST packets before dhcp DISCOVER, dose it means that we shoud consider that case and do nothing before a valid dhcp DISCOVER? or there might be something going wrong in my code? It seems that I haven't edited anything related to that.

[EricLee543]

The dhclient will attempt to reacquire the previously assigned IP within a certain time period. This is why it skips the DISCOVER phase. If you want to debug the DISCOVER phase, you can assign a different IP address than the one previously assigned, and dhclient will resend the DISCOVER packet. Ultimately, your goal is to ensure that the correct IP can be assigned. It is a feature of dhclient. Not a bug.