DHCP Relay over transit-network

Simon Hobson dhcp1 at thehobsons.co.uk
Tue Dec 30 12:22:38 UTC 2014

"Muenz, Michael" <m.muenz at spam-fetish.org> wrote:

>> And what does it put in the GI-Addr field ? That should automatically be from the subnet and is what the server should be using to select an IP etc to offer the client.
> Is there a way to see the value with tcpdump? I only control the firewalls and did a "tcpdump -X -s 0", I'll investige more time on this with wireshark.

Wireshark will decode the packets for you. You can either do that real-time, or capture the packets with tcpdump or tshark and analyse the file elsewhere.

>> What, if anything, does the server log ?
> See above, client and server (both Windows) is not under my control. I'll let my client install wireshark on the server and check firewall settings.

Ah, that's fun !

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