dhcp issue...

Thomas Lange lange at cs.uni-koeln.de
Tue May 31 22:14:41 CEST 2022


Hi Andreas,

you should check if the dhcp request from the client (which are
technical bootpc packets are received on the dhcp server.
Does the dhcp server have more than one network card? Then check
/etc/default/isc-dhcp-server if the dhcp server is listening on all
interfaces.

# tcpdump -pnlqte udp and src port bootpc and broadcast

You should also see some messages in the log of the dhcp server, for
e.g. if the server receives the request but has no free IP addresses.

In addition to tcpdump there's also dhcpdump for debugging.

-- 
best regards Thomas


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