Opened 6 years ago

Closed 6 years ago

#10298 closed defect (no_response)

dhcp not working

Reported by: evers.le@… Owned by: developers
Priority: response-needed Milestone: Backfire 10.03.1
Component: packages Version: Backfire 10.03
Keywords: dhcp busybox Cc:


udhcpc is not able to acquire an ip address from a Arris Touchstone® TM722B cable modem. Other devices (linux, OSX desktop, factory firmware, old busy box versions (kamikaze 0.9) on dd-wrt) do not have this problem. I checked with wireshark and the noticeable difference is that the dhcp discovery messages from udhcpc contain 0 bytes past the end of the options block, all other tested dhcp versions do not have this.
So I suspect removing these 0 padding bytes will solve the issue.
udhcp/busybox on debian does not put 0 padding bytes in its discover message and works.

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Change History (3)

comment:1 Changed 6 years ago by florian

Can you check if this is because of any OpenWrt patch modifying udhcpc? If so, if you remove that patch, or circumvent its purpose, is it working better?

comment:2 Changed 6 years ago by nico

  • Priority changed from normal to response-needed

comment:3 Changed 6 years ago by nbd

  • Resolution set to no_response
  • Status changed from new to closed

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