Same MAC - diffrent IP depending on the contex (class)?
glenn.satchell at uniq.com.au
glenn.satchell at uniq.com.au
Fri Aug 14 02:09:03 UTC 2020
Hi Robert,
That's one way to do it.
The other way would be to create a class and two pools for each host. In
the pools have a single IP address in the range. The class would select
based on PXE and ethernet. This would be ok for a few clients, but if
you have hundreds it might not scale well.
regards,
-glenn
On 2020-08-13 22:54, Robert Socha wrote:
> Hi,
>
> I was unable to find solution for my problem, so I implemented it in
> source code.
> I added "match if" directive to host definition which allows me to do
> something like this:
>
> option client-architecture code 93 = unsigned integer 16;
>
> class "is-netboot" {
> match if exists client-architecture and (not (option
> user-class="iPXE"));
> }
>
>
> host O000C29EF4070 {
> hardware ethernet 00:0C:29:EF:40:70;
> fixed-address 20.20.20.20;
> option routers 10.10.10.10;
> option subnet-mask 255.255.255.255;
> }
>
> host N000C29EF4070 {
> match if "is-netboot";
> hardware ethernet 00:0C:29:EF:40:70;
> fixed-address 100.64.4.2;
> option routers 100.64.4.1;
> option subnet-mask 255.255.255.252;
> }
>
> I also added support for globbing for include directive:
>
> include "/etc/dhcp/host/*.conf"
> include "/etc/dhcp/host/*/*.conf"
>
> to recursively include files from folder and subfolders.
>
> Best regards
>
>
> W dniu 07.08.2020 o 23:02, Robert Socha pisze:
>> Hi,
>>
>> I wonder if it's possible to achieve this in ISC DHCP:
>>
>> - I have static hosts only (only known clients - no dynamic
>> assignments)
>> - I need to assign different addresses to host depending on if it's
>> boot client (PXE or UEFI), or if it's OS (linux,windows,etc) DHCP
>> client discover
>> ( I need that because we use RFC3021 or /32 route-able IP
>> assignments to customer services and this addresses are not supported
>> by UEFI firmware).
>>
>> So something like this (in pseudo config) or as idea:
>>
>>
>> # arch-type -> option 93
>> if(if exists arch-type) {
>> # Private/netboot subnet
>> host N000c290e741d {
>> hardware ethernet 00:0c:29:0e:74:1d;
>> fixed-address 100.120.120.2;
>> option routers 100.120.120.1;
>> option subnet-mask 255.255.255.252;
>> }
>> } else {
>> # This for "public" network - discovers from "not boot agent"
>> host O000c290e741d {
>> hardware ethernet 00:0c:29:0e:74:1d;
>> fixed-address 10.255.255.11;
>> option routers 10.255.255.10;
>> if option vendor-class-identifier="MSFT 5.0" {
>> option subnet-mask 255.255.255.255;
>> } else {
>> option subnet-mask 255.255.255.254;
>> }
>> }
>> }
>>
>> I looking for solution with static assignments (not dynamic pool's)
>> for netboot network (we some logic behind this assigned IP's)
>>
>> Best regards
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