Hello.
I trying to wrote my own dhclient.conf, because I dont want dhcp to write default gw in my routing table(I already have default gw from my pppoe connection) and I want from dhclient to send request only to one of my intefaces(eth2) because I have my own dhcp server(listen on eth0) .
In man dhclient.conf I find option "interface "string";" is this is the place that I can tell to dhclient " send requests only trough eth2 ", but this not serious problem because as I already say my dhcp server listens only on eth0 and maybe in its options is possible to tell him rejecting requests from dhclient that running on the same machine.

Thanks.
P.S.
I fix mi interface problem ( maybe)
# If you want dnsmasq to listen for DHCP and DNS requests only on
# specified interfaces (and the loopback) give the name of the
# interface (eg eth0) here.
# Repeat the line for more than one interface.
interface=eth0
# Or you can specify which interface _not_ to listen on
except-interface=lo
But default gw problem stays.

Gahhh, rpoblem with interface stays
dhclient
Internet Systems Consortium DHCP Client V3.0.4
Copyright 2004-2006 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

Listening on Socket/eth0
Sending on Socket/eth0
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 6
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 13
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 7
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 19
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 10
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 6
No DHCPOFFERS received.
No working leases in persistent database - sleeping.

hi zomane,

in dhcpd.conf sample - you'll find how to write it.
for simplicity -- just dont add a option-router (default-gateway) line.

HTH.

Thanks but... "The dhcpd.conf file contains configuration information for dhcpd, the
Internet Systems Consortium DHCP Server." This is from man dhcpd.conf

I have my own dhcp server (dnsmasq), but I want to modify dhclient.conf this is the config of the ISC dhcp client .
I want to tell to dhclient : dont write to routing table default gw and use eth2 for discovery and requests .
I see in some samples of dhclient.conf like this http://www.bind9.net/dhclient.conf option router but this is in lease section.

hi,

OK - from this you seem to be able to do that.

just try to insert # on the option router,
and change the interface on eth2.

since i havent try this - will it be overwritten by dhcpd.conf?
post me the news

HTH.

Because my problems with dhclient are part of something bigger . I abandoned experiments (for now) with dhclient and using "dhcpcd -d -o -R -Y -N -G eth2"(works great).
Thanks for ideas.