client refuses to accept offer

Simon Hobson dhcp1 at thehobsons.co.uk
Wed May 12 08:47:13 UTC 2010


anctop wrote:

>  > Can you run wireshark (or similar) on the client to see what it is
>>  receiving and sending? It may be that the dhcp offer is not making it to
>>  the client, or perhaps a dhcp option is missing in the offer? Similarly
>
>On the client side, wireshark shows no traffic to/from the dhcp
>server. In the "Protocol" column, those "DHCP" entries have only
>"0.0.0.0" as source and "255.255.255.255" as destination.
>It appears that the offers from the server cannot reach the client.

I'm confused ! You say there is no traffic to/from the DHCP server, 
but then say it's from 0.0.0.0 to 255.255.255.255.

The initial DHCP-Discover will be from 0.0.0.0 as the client doesn't 
have an IP address at this time. It's always to 255.255.255.255 (the 
broadcast address) as it doesn't know the address if the server.
The server will respond to the broadcast address as well.

-- 
Simon Hobson

Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
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