Strange configuration problem

[Sten Carlsen]

On 15-01-2020 09.30, Petar Kozić wrote:
>
> I tried this, but if I remove range from config, my virtual host can’t
> get IP during boot.

The point is not to remove the range but to set the fixed addresses
outside the range. Addresses in the range will be handed out as you
describe, the server will not see those as reserved but as available for
use.

...

range 116.199.70.98 116.199.70.*110*;

...

host myhost1 {
hardware ethernet FE:4A:DB:C0:BF:AD;
fixed-address 116.199.70.*111*;
}

...

There is another method, leases can be marked as reserved for a specific
host. This is done in a different way, using Omapi. Check the man page.


>
> When virtual machine boot and I log onto it I can see there is no IP
> address assign. If I run dhclient command in virtua machine IP assigned.
>
> Really strange problems with this dhcp server.
>
>
>
>> Thank you very much, I will try that.
>>
>> On Tue, Jan 14, 2020, 18:50 Sten Carlsen <stenc at s-carlsen.dk
>> <mailto:stenc at s-carlsen.dk>> wrote:
>>
>>
>>     On 14-01-2020 16.38, Petar Kozić wrote:
>>>
>>>     #
>>>     # Subnet declarations
>>>     #
>>>     subnet 116.199.70.96 netmask 255.255.255.240 {
>>>     default-lease-time 3600;
>>>     option routers 116.199.70.97;
>>>     option interface-mtu 1400;
>>>     option subnet-mask 255.255.255.240;
>>>     option broadcast-address 116.199.70.111;
>>>     option domain-name-servers 8.8.8.8, 8.8.4.4;
>>>     *range 116.199.70.98 116.199.70.110;*
>>>     }
>>>
>>>
>>>     ## IP reservation from first subnet ##
>>>
>>>     host myhost1 {
>>>     hardware ethernet FE:4A:DB:C0:BF:AD;
>>>     *fixed-address 116.199.70.98;*
>>>     }
>>>     host myhost2 {
>>>     hardware ethernet AA:6D:47:76:58:58;
>>>     fixed-address 116.199.70.99;
>>>     }
>>>     host myhost3 {
>>>     hardware ethernet 86:CB:59:8B:CD:BA;
>>>     fixed-address 116.199.70.100;
>>>     }
>>>     host myhost4 {
>>>     hardware ethernet D6:9R:79:44:93:AD;
>>>     fixed-address 116.199.70.101;
>>>     }
>>>     host myhost5 {
>>>     hardware ethernet 06:BW:15:DD:09:79;
>>>     fixed-address 116.199.70.102;
>>>     }
>>
>>     These host statements have a fixed address that is in the range,
>>     that means that the server will hand these addresses out to any
>>     other device that asks for an address.
>>
>>     Host statements with fixed addresses should normally have
>>     addresses outside any range, then the server will not be able to
>>     hand these addresses out to other devices.
>>
>>>
>>>     My problem is in that because the client in IP reservation
>>>     sometimes gets reserved IP sometimes first free IP from range
>>>     which isn't in the reservation list.
>>>     I can't figure how to set this config to permanent stay on the
>>>     same IP.
>>>
>>>     For example if myhost1 gets the right IP and that VM works about
>>>     10 days and I need to reboot for some reason after reboot get
>>>     another IP, that is weird.
>>>     Or on an example I have baremetal server where I have
>>>     virtualization and there is my VM from myhost1 to myhost8, if I
>>>     reboot baremetal after booting, two VM get right IP, other not.
>>>
>>>     What wrong am I doing?
>>>     Thank you.
>>>
>>>
>>>     *—*
>>>     *
>>>     *
>>>     *Petar Kozić*
>>>
>>>
>>>     _______________________________________________
>>>     dhcp-users mailing list
>>>     dhcp-users at lists.isc.org <mailto:dhcp-users at lists.isc.org>
>>>     https://lists.isc.org/mailman/listinfo/dhcp-users
>>
>>     --  
>>     Best regards
>>
>>     Sten Carlsen
>>
>>     No improvements come from shouting:
>>
>>     "MALE BOVINE MANURE!!!" 
>>
>>     _______________________________________________
>>     dhcp-users mailing list
>>     dhcp-users at lists.isc.org <mailto:dhcp-users at lists.isc.org>
>>     https://lists.isc.org/mailman/listinfo/dhcp-users
>>
>
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-- 
Best regards

Sten Carlsen

No improvements come from shouting:

"MALE BOVINE MANURE!!!" 

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