padding before end of DHCPOFFER packet?

Joseph Bernard jhb at
Thu Sep 4 18:12:46 UTC 2014

Is it valid to have padding (0) before the end (255) of a DHCPOFFER packet?  I have a Cisco switch doing this, but I’m not sure if it valid.  I have some old HP Jetdirect boxes that will not take a packet constructed like this.  I just want to be sure if the padding is valid or not so I don’t mistakingly accuse Cisco of having bad code.

Joseph B.

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