According to the following thread, no port should be needed since all the patches that have been applied, including the one concerning the thread. In fact, the thread finishes without concluding whether the patch has been applied or not. You can grab it in the thread, anyway.
The thread starts at Jan 4th 2005 until Jan 6th and is only retaken at April 14th in this thread.
This thread on help-hurd has a little more info on what's still needed for DHCP.
Found this message about DHCP capabilities in the Hurd encouraging.
- Tom Hart began a discussion of 14 posts in Oct 2002.
The beginnings of a DHCP translator is available in the Hurd sources on Savannah: hurd/trans/pump.c
Unfortunately our current TCP/IP stack, the pfinet translator, lacks support for the AF_PACKET interface as well as sending packets with an IP address of 0.0.0.0.
Grant Bowman on bug-hurd:
Herbert Xu (Pump maintainer) told me that to operate correctly, pump uses the AF_PACKET interface which is only present in 2.2. Anyone else know the status of getting these compiled and functional?
Neal Walfield on bug-hurd replies:
> Anyone else know the status of getting these compiled and functional? We need to be able to send to the DHCP server with ip address 0.0.0.0.