Help with content of /etc/network/interfaces file

Jay Ridgley jridgley2 at
Sun Feb 21 21:53:11 UTC 2010


I am attempting to bring up a wireless subnet on a Belkin Wireless Access Point. 
  I have been unable to correctly code the content of the 
/etc/network/interfaces file (copy below).What am I missing???

I have the /etc/dhcp3/dhcpd.conf file specified correctly(at least it seems to 
be correct, because the server is running). Copy also below.

When I enter an ifconfig it shows the three nics, however, eth2 does not have an 
IP address. If I remove the comment flag(#) from the iface line and the auto 
line my network fails to come up. Any examples I have found seem to avoid this 
type of arrangement (two nics doing DHCP one a client (for the internet) and one 
a server (for the Access Point).


auto lo
iface lo inet loopback

iface eth0 inet dhcp

auto eth0

iface eth1 inet static

auto eth1

#iface eth2 inet dhcp

# ??? what needs to be here ???

#auto eth2

/etc/network/interfaces (END)



# DHCP configuration for CDJ Systems Wireless subnet of a Belkin Access Point

ddns-update-style interim;
ignore client-updates;

# DHCP for eth0 - outside world connection via cable modem
#  no entries here

# Static subnet for eth1

subnet netmask {
           option routers;
           option subnet-mask;
           option domain-name-servers,;
           option ip-forwarding off;

#DHCP subnet a wireless Access Point for eth2

subnet netmask {
         option routers;
         option subnet-mask;
         option broadcast-address;
         option domain-name-servers,;
         option ip-forwarding off;
         default-lease-time 21600;
         max-lease-time 43200;
# Include a static ip address for the Access Point (per vendor)

host bear_den {
         hardware ethernet 00:11:50:45:7A:42;

/etc/dhcp3/dhcpd.conf (END)


Where else should I be looking for information about what is going on?

Any help would be most appreciated.


Jay Ridgley
jridgley2 at
Registered Linux User ID - 9115
Registered Ubuntu User ID - 23320

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