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Kernel and
Network Interface Issues
You may need to adjust your kernel
configuration or other aspects of your network to use a DHCP server. In
particular, you must enable the Packet Socket and Socket Filtering options in
your kernel configuration, as described in
Network Configuration. (Version 1 of dhcpd doesn't require
Socket Filtering, but more recent versions do.) Some DHCP clients require responses from the
DHCP server addressed to 255.255.255.255. Unfortunately for DHCP server
operation, Linux defaults to changing such addresses to your local broadcast
address (such as 192.168.1.255). If you have problems with some DHCP clients
(particularly Windows systems), you may need to correct this by adding an
explicit route to your DHCP server computer's routing table. You can do this
with the following command: # route add -host 255.255.255.255 dev eth0
You may need to change eth0 to
whatever value is appropriate for your system. This command may be present in
your DHCP startup script. You can check if it's present by typing route -n at a command prompt. This command displays all your system's routing table
entries, as described in
see the 255.255.255.255 route at the top of the output, if it's present.
