Hi (what is your name?),
i'm wondering why you are writing your interface to each of the subnets.
Where did you get that configuration from?
In our config file the interface is defined once at the beginning like this:
"interfaces-config" :
{
"dhcp-socket-type" : "udp",
"interfaces" :
[
"ens160"
]
},
See http://kea.isc.org/docs/kea-guide.html#dhcp4-interface-configuration
(the udp is because of the relayed traffic)
The subnets look like this:
"subnet4" :
[
{
"subnet": "10.1.0.0/28",
"id" : 1001,
"option-data": [ { "name": "routers", "data": "10.0.0.1" } ],
"pools" : [ { "pool" : "10.1.0.2 - 10.1.0.10" } ]
},
{
"subnet": "10.2.0.0/28",
"id" : 1002,
"option-data": [ { "name": "routers", "data": "10.2.0.1" } ],
"pools" : [ { "pool" : "10.2.0.2 - 10.2.0.10" } ]
},
So there is no need to set the subnet mask.
Mit freundlichen Grüßen / With kind regards
Sebastian Wessel
Specialist IT Systems
_________________________________________________________________________________________________________________________
Sebastian Wessel
Takko Holding GmbH
Alfred-Krupp-Straße 21, 48291 Telgte, Germany
Phone +49 2504 923 865 Mobile +49 152 21811579 Fax +49 2504 923 797
www.takko.com
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Ust.-Id. Nr. DE209094382-----Original Message-----
From: Kea-users [mailto:[email protected]] On Behalf Of
[email protected]
Sent: Tuesday, May 23, 2017 2:00 PM
To: [email protected]
Subject: [Kea-users] Subnet mask selection
Hi,
tl;dr: can I set option 1 (subnet mask) on a per-host basis ?
I am using Kea dhcp4 1.1.0
I have the following setup:
- a single interface (eth0)
- clients are directly connected (no relay)
- two subnets (a /24, a /25), each defined with a specific subnet_id :
{'id': 1024, 'subnet': '10.0.0.0/24'} and {'id': 1025, 'subnet':
10.1.0.0/25'}
- a sql database which contains, for all trusted hosts, the allocated IP
address, the corresponding subnet_id, and an option 3 (routers)
Sadly, as-is, I cannot make it works
If a bind each subnet to the interface eth0, it works for the first defined
subnet, not for the other Config sample:
{
"id": 1024,
"interface": "eth0",
"subnet": "10.0.0.0/24"
},
{
"id": 1025,
"interface": "eth0",
"subnet": "10.1.0.0/25"
}
-> OK for hosts in 1024, "failed to advertise a lease" for hosts in 1025
If I remove the interface binding, same behavior:
-> OK for hosts in 1024, "failed to advertise a lease" for hosts in 1025
If I put all hosts in 1024, and add an option 1 (subnet mask) in the
configuration, or inside the sql database : all host gets a /24 (aka, option 1
is ignored)
Is there a way to solve my case ?
Best regards,
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