On Fri, Nov 25, 2005 at 12:02:47PM -0500, Kenneth Jacker wrote:
> am> server. Assuming you're using dhcpd you'll want something
> am> similar to this in your dhcpd.conf:
>
> am> host yourhostname {
> am> hardware ethernet 00:11:22:AA:BB:CC;
> am> fixed-address 192.168.0.123;
> am> }
>
> Good idea!
>
> However, 'dhcpd' is running within my LinkSys router, not on one of my
> Debian boxen ...
>
> I spent quite a few minutes going through the router's option pages,
> but couldn't see a way to specify this.
I have a Linksys wireless router that, as far as I can tell, can't
be configured as suggested above (without changing the firmware).
Fortunately, you can use /etc/dhclient.conf on the client instead of
dhcpd.conf on the router to accomplish something similar.
I have this in /etc/dhclient.conf:
alias {
interface "eth0";
fixed-address 192.168.1.101;
option subnet-mask 255.255.255.0;
}
--------------------------------
And this in /etc/network/interfaces:
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
auto eth0
iface eth0 inet dhcp
----------------------------
This setup works with port forwarding for ssh and, as far as I know,
everything else but openvpn. To make it work for openvpn I also changed
/etc/dhclient-script to promote the fixed-address, which manifests
only as an alias, to the primary address.
$diff -u /etc/dhclient-script.dist /etc/dhclient-script
--- /etc/dhclient-script.dist 2005-11-26 09:01:15.000000000 -0500
+++ /etc/dhclient-script 2005-11-26 09:00:43.000000000 -0500
@@ -123,6 +123,12 @@
exit_with_hooks 0
fi
+if [ x$alias_ip_address != x ] ; then
+ given_ip_address=$new_ip_address;
+ new_ip_address=$alias_ip_address;
+ alias_ip_address=$given_ip_address;
+fi
+
if [ x$reason = xBOUND ] || [ x$reason = xRENEW ] || \
[ x$reason = xREBIND ] || [ x$reason = xREBOOT ]; then
if [ x$old_ip_address != x ] && [ x$alias_ip_address != x ] && \
--------------------
If you're not familiar with context diffs, the lines beginning with a
single '+' are what was added by me. Hope that helps.
Win
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