Greetings, all. I'm exploring using the "prefix exclude" feature to do
something a little different than what it's RFC describes and would like to
know if my scenario would work. In the kea ARM, the example config is as
follows:
"Dhcp6": {
"subnet6": [
{
"subnet": "2001:db8:1::/48",
"pd-pools": [
{
"prefix": "2001:db8:1:8000::",
"prefix-len": 56,
"delegated-len": 64,
"excluded-prefix": "2001:db8:1:8000:cafe:80::",
"excluded-prefix-len": 72
}
]
}
]
}
This allows a device that sends a Prefix Exclude option to be allocated the
indicated /72.
In my environment, we'd like to be able to allocate PDs from a block that is
discrete from the subnet and in which the very first PD is NEVER assigned, ala:
"Dhcp6": {
"subnet6": [
{
"subnet": "2001:db8:1::/48",
"pd-pools": [
{
"prefix": "2001:db8:2::",
"prefix-len": 48,
"delegated-len": 60,
"excluded-prefix": "2001:db8:2::",
"excluded-prefix-len": 60
}
]
}
]
}
Assuming I don't have any dhcpv6 endpoint devices sending the excluded prefix
option, does this accomplish what I'm attempting, which is: never use the first
/60 from the PD /48 prefix?
Thanks
Dan
--
Dan Geist dan(@)polter.net
--
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