[Kea-users] DHCP4 reservation by DNS hostname lookup - how?

[Peter Davies]

Hi Jeff, 
You cannot use a fqdn in place of an address within a host reservation in Kea. 

Kind Regards Peter 


From: "Jeff Armstrong" <jeff at whitefern.com> 
To: "Kea-users at lists.isc.org" <kea-users at lists.isc.org> 
Sent: Wednesday, 9 October, 2024 17:10:39 
Subject: [Kea-users] DHCP4 reservation by DNS hostname lookup - how? 



In the isc-dhcp-server I could use DNS to make reservations: 
host gh-ja-iphone-uk { hardware ethernet 5b:c7:43:37:a2:b0; fixed-address ja-iphone-uk.gh.mydomain.com; } 
and the IP assigned would be retrieved from DNS. 


In Kea I have tried: 
"reservations" : [ 
{ "hw-address" : "5b:c7:43:37:a2:b0" , "fixed-address" : "ja-iphone-uk.gh.mydomain.com" } 
] 
"reservations" : [ 
{ "hw-address" : "5b:c7:43:37:a2:b0" , "ip-address" : "ja-iphone-uk.gh.mydomain.com" } 
] 
"reservations" : [ 
{ "hw-address" : "5b:c7:43:37:a2:b0" , "host-name" : "ja-iphone-uk.gh.mydomain.com" } 
] </ div> 
but these don't work - the first two stop the server from starting with a configuration error, and the third just assigns from the pool. 
I have read [ https://kea.readthedocs.io/en/kea-2.6.1/arm/dhcp4-srv.html#host-reservations-in-dhcpv4 | https://kea.readthedocs.io/en/kea-2.6.1/arm/dhcp4-srv.html#host-reservations-in-dhcpv4 ] - but cannot find a clear list of all the recognised options for reservations. 
Help?!? 
Many thanks, 
Jeff 

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