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Linux Mastering Development

Test own dhcp client locally

I would like to test the DHCP client that I wrote on Ubuntu 16.04.6 LTS. I would like to do it locally on my laptop i.e. send and receive DHCP packets inside.

Here is what I tried:

  • created two dummy interfaces: dummy0, dummy1
  • created bridge for these 2 interfaces: br0

The goal is to send DHCP discover from dummy0 and receive it on dummy1, I’m sending DHCP discover on dummy0, unfortunately I don’t see any packets on dummy1 interface. If it could be received the next step would be to run DHCP server on dummy1 to test how my client is doing.

I see DHCP discover in wireshark on dummy0 interface. I see nothing on dummy1. Additionally: I see packet on br0.

I assume there may be better way to do this, could you please tell me how this can be done?

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