I am hoping someone count point me in the right direction or tell me I'm headed
towards a dead-end with setting up overlapping subnets in Kea. I saw in the
ARM for the version I am using, 2.6.0, that overlapping subnets are supported
however I am getting an error from kea-dhcp4 daemon that states
"...shared-networks: subnet with the prefix of '192.0.2.0/24' already exists",
with the configuration I have below.
I've tried with and without placing the subnets under the shared-networks
object and several other adjustments, the closest I can get to the desired
behavior is to set one subnet up as a /23 and the other as a /24 and adjusting
the pools but this does not meet my requirements. The client-classification
and everything works great.... Its just the overlapping subnets that is
throwing me for a loop with my configuration.
I did find a post on the Kea user mailing list from 2017, but it was left
unanswered.
{
"Dhcp4" : {
"client-classes" : [
{
"name" : "red",
"test" : "substring(option[82].option[151].hex,1,all) == 'red'"
},
{
"name" : "blue",
"test" : "substring(option[82].option[151].hex,1,all) == 'blue'"
}
],
"shared-networks" : [
{
"name" : "red-192-0-2",
"subnet4": [
{
"id" : 1000,
"client-class" : "red",
"subnet": "192.0.2.0/24",
"pools": [{ "pool": "192.0.2.100 - 192.0.2.200" }],
"option-data" : [
{ "name" : "routers", "data" : "192.0.2.1" },
]
}
]
},
{
"name" : "blue-192-0-2",
"subnet4" : [
{
"id" : 1001,
"client-class" : "blue",
"subnet": "192.0.2.0/24",
"pools": [{ "pool": "192.0.2.100 - 192.0.2.200" }],
"option-data" : [
{ "name" : "routers", "data" : "192.0.2.1" }
]
}
]
}
]
}
}
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