Is it possible to have both dhcp AND static ip on same NIC?

vespaman

On my stationary computer, I have set-up eth0 like this;
config_eth0=(
"192.168.1.48"
"10.1.10.101/24"
"10.1.10.102/24"
"10.1.10.103/24"
"10.1.10.104/24"
"10.1.10.105/24"
"10.1.10.106/24"
"10.1.10.107/24"
"10.1.10.108/24"
"10.1.10.109/24"
"10.1.10.110/24"
)

I use all the "extra addresses" for software development.

Now, I'd like the same on my laptop, but with the first address being retrieved by dhcp. I tried
config_eth0=(
"dhcp"
"10.1.10.101/24"
"10.1.10.102/24"
"10.1.10.103/24"
"10.1.10.104/24"
"10.1.10.105/24"
"10.1.10.106/24"
"10.1.10.107/24"
"10.1.10.108/24"
"10.1.10.109/24"
"10.1.10.110/24"
)

.. but this does not work, as the extra addresses are removed upon starting eth0.

Can this be done?

UberLord · Posted: Tue Sep 01, 2009 1:38 pm Post subject:

Depends on the dhcp client used.
dhcpcd-4.x and better should not remove statically assigned addresses.
_________________
Use dhcpcd for all your automated network configuration needs
Use dhcpcd-ui (GTK+/Qt) as your System Tray Network tool

vespaman · Posted: Tue Sep 01, 2009 1:50 pm Post subject:

Well, I can't really tell by invoking dhcpcd (can't find any version info), but at least it is net-misc/dhcpcd 5.0.6 that is installed.
The box is a fresh ~arch installation.

It may be the net.eth startup script that removes these additional static ip's, no?

UberLord · Posted: Tue Sep 01, 2009 2:09 pm Post subject:

It shouldn't after you've run dhcp
_________________
Use dhcpcd for all your automated network configuration needs
Use dhcpcd-ui (GTK+/Qt) as your System Tray Network tool

vespaman · Posted: Tue Sep 01, 2009 4:24 pm Post subject:

And now (at home) it does not.

Could there be something about the set-up of the dhcp servers or routes? Or perhaps because, at work, we have a windows server doing the dhcp management. At home I have linux.

Will test more tomorrow, thanks!

- Micael