DHCP - is it possible to setup ip-alias ?

Hi !

Is it possible to assign aliased IP addres with DHCP ?
Simply i want to configure two IP addresses with DHCP protocol
assigned to one MAC that same time.

Is it even possible ?

--
z powazaniem Jesli w gardle masz Sahare a zoladek sie buntuje,
Marcin Szczepaniak to browarem zalej pale, nic tak bosko nie rajcuje

Marcin Szczepaniak <(E-Mail Removed)> said:
>Is it possible to assign aliased IP addres with DHCP ?
>Simply i want to configure two IP addresses with DHCP protocol
>assigned to one MAC that same time.
>
>Is it even possible ?

It is possible; this requires that you are able to specify a private
dhcp client identifier to your dhcp client - and that your dhcp client
understands virtual interfaces. Then the next step (after you get the
base pieces working manually) is to twist your system interface
configuration to allow this.

I've written some messages about this earlier -- you might try finding
them via Google Groups search.
--
Wolf a.k.a. Juha Laiho Espoo, Finland
(GC 3.0) GIT d- s+: a C++ ULSH++++$ P++@ L+++ E- W+$@ N++ !K w !O !M V
PS(+) PE Y+ PGP(+) t- 5 !X R !tv b+ !DI D G e+ h---- r+++ y++++
"...cancel my subscription to the resurrection!" (Jim Morrison)

At Fri, 8 Apr 2005 20:20:50 +0000 (UTC) Juha Laiho wrote:

> It is possible; this requires that you are able to specify a private
> dhcp client identifier to your dhcp client - and that your dhcp client
> understands virtual interfaces. Then the next step (after you get the
> base pieces working manually) is to twist your system interface
> configuration to allow this.
>
> I've written some messages about this earlier -- you might try finding
> them via Google Groups search.

Thanks for reply.

I will search archives.
But one more question - did it work with windows clients ?

Marcin Szczepaniak <(E-Mail Removed)> said:
>At Fri, 8 Apr 2005 20:20:50 +0000 (UTC) Juha Laiho wrote:
>
>> It is possible; this requires that you are able to specify a private
>> dhcp client identifier to your dhcp client - and that your dhcp client
>> understands virtual interfaces. Then the next step (after you get the
>> base pieces working manually) is to twist your system interface
>> configuration to allow this.
>>
>> I've written some messages about this earlier -- you might try finding
>> them via Google Groups search.
>
>Thanks for reply.
>
>I will search archives.
>But one more question - did it work with windows clients ?

I never even tried -- my initial guess would be no, but that's something
you have to ask in a Windows group. On the dhcp server side that is no
problem: dhcp server deals addresses based on dhcp client identifier, and
unless overridden by the client, the client identifier defaults to the
ethernet adapter MAC address (so, even though it looks like the dhcp
server deals IP addresses based on MAC addresses, the strict rules are
a bit different from that).

I did that because I had a need for several distinct IPs from my DSL
provider (and they did provide up to 5 addresses (or, as they said, the
conneciton did support using a switch at the customer premises to share
the connection to up to 5 devices). I just "happened" to have the line
connected to just one machine - and did 1-to-1 address translation for
the other machines. Currently I don't have that system set up any more,
so I just can point to the old articles.
--
Wolf a.k.a. Juha Laiho Espoo, Finland
(GC 3.0) GIT d- s+: a C++ ULSH++++$ P++@ L+++ E- W+$@ N++ !K w !O !M V
PS(+) PE Y+ PGP(+) t- 5 !X R !tv b+ !DI D G e+ h---- r+++ y++++
"...cancel my subscription to the resurrection!" (Jim Morrison)