Setting up dhcpd

K

kpedersen

Hello,

I have finally got time to move over from Windows Server 2003 (internet connection sharing) to a FreeBSD solution, whilst attempting to improve my networking knowledge.

However... I have come to a slight block whilst trying to set up the DHCP server.

I am following http://docs.freebsd.org/doc/6.1-RELEASE/usr/share/doc/handbook/network-dhcp.html

I have followed it pretty much step by step but in the rc.conf I have replaced the dhcpd_ifaces to use my network card (fxp0) rather than their example one (dc0) however, when I then do (...)/dhcpd start it states that fxp0 is not found...

Do I need a different card or something? One that broadcasts? Surely not...

Any advice would be appreciated :)
 
That link is to an old version, 6.1-RELEASE.

Please show your ifconfig output and the new entries you've added to /etc/rc.conf.
 
Hi,

The required information is below.

/etc/rc.conf
Code: 
hostname="bob"
keymap="uk.iso"
powerd_enable="YES"
dhcpd_enable="YES"
dhcpd_ifaces="fxp0"

`ifconfig`
Code: 
fxp0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500
	options=2009<RXCSUM,VLAN_MTU,WOL_MAGIC>
	ether 00:d0:59:cf:94:b5
	media: Ethernet autoselect (100baseTX <full-duplex>)
	status: active
plip0: flags=8810<POINTOPOINT,SIMPLEX,MULTICAST> metric 0 mtu 1500
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
	options=3<RXCSUM,TXCSUM>
	inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3 
	inet6 ::1 prefixlen 128 
	inet 127.0.0.1 netmask 0xff000000

The error I get is

Code: 
fxp0: not found
/usr/local/etc/rc.d/isc-dhcpd: WARNING: failed to start dhcpd
 
Try running it by hand:
# dhcpd -cf /usr/local/etc/dhcpd.conf -lf /var/db/dhcpd/dhcpd.leases fxp0
 
That gives me the same error.

Code: 
Internet Systems Consortium DHCP Server V3.0.7
Copyright 2004-2008 Internet Systems Consortium
All rights reserved
For info, please visit [url]http://www.isc.org/sw/dhcp/[/url]
Wrote 0 deleted host decls to leases file.
Wrote 0 new dynamic host decls to leases file.
Wrote 0 leases to leases file.
Jun 22 00:02:06 bob dhcpd: fxp0: not found
fxp0: not found

I really do not get it, the interface is definately there in `ifconfig`...

EDIT:
Right, it ends up that I had to give fxp0 an IP first... which kinda makes sense since a DHCP server probably doesnt assign itself an IP...
I *think* I might be able to get this working yet :p
 
Yep, you are correct. Fxp0 needs an IP address to work with dhcpd.
 
Cool, everything is working well, I am now posting this using my brand new wired network which is nat'ing across the house to the university wifi :)

The only thing I noticed that I didn't need to do (from the handbook) was

/boot/loader.conf
Code: 
ipfw_load="YES"
ipdivert_load="YES"

Does this now mean that the translation is done in userland rather than the kernel?

Other than that, it works great and although it took a bit more work, at least I know what configuration was needed as opposed to the Windows ICS magic box which could be doing *anything*.

Thanks for the help all.
 
kpedersen said:
The only thing I noticed that I didn't need to do (from the handbook) was

/boot/loader.conf
Code: 
ipfw_load="YES"
ipdivert_load="YES"

Does this now mean that the translation is done in userland rather than the kernel?
Click to expand...
They are being loaded by the /etc/rc.firewall script.
 
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