[Kea-users] ISC DHCP to Kea – Why KeaMa comments some options?

[Peter Davies]

Hi Diogo 
I ran this config snippet through Keama and got: 
Started parsing new subnet declaration in line 1
(...)/bc97e1f6-17a1-11f0-8122-0242ac120002.conf line 3: unknown option dhcp6.vendor-class
  option dhcp6.vendor-class 0 
               ^ 

Could this be because option 16 is expected to be sent by the client and not by the server? 

/Peter 

From: "Kea-users at lists.isc.org" <kea-users at lists.isc.org> 
To: "Kea-users at lists.isc.org" <kea-users at lists.isc.org> 
Cc: "Diogo André de Assumpção" <daa at meta.com> 
Sent: Friday, 11 April, 2025 17:40:29 
Subject: [Kea-users] ISC DHCP to Kea – Why KeaMa comments some options? 



Hi all, 

I’m using KeaMa to validate a few things around a planned migration from ISC to Kea. I noticed that for some v6 options the script will output a Kea version of the ISC config, but comment it out. Any idea why? 

Here’s an example: 

ISC: 



subnet6 2001:db8:1234::/64 { 

option dhcp6.name-servers 2001 : DB 8 : 1234 :: 53 ; 

option dhcp 6 .vendor-class 0 10 "HTTPClient" ; 

option dhcp 6 .bootfile-url "http://deploy.cisco.com/install/ipxe2/ipxeb.efi" ; 

pool 6 

{ 

range6 2001 : DB 8 : 1234 :: 320 2001 :DB 8 : 1234 :: 1000 ; 

} 

} 





Kea 



{ 

"id": 1997, 

"subnet": "2001:db8:1234::/64", 

"option-data": [ 

{ 

"space": "dhcp6", 

"name": "dns-servers", 

"code": 23, 

// "original-data": "2001:DB8:1234::53", 

"data": "2001:db8:1234::::53" 

} 

// { 

// "space": "dhcp6", 

// "name": "vendor-class", 

// "code": 16, 

// "data": "0, 10, HTTPClient" 

// } 

// { 

// "space": "dhcp6", 

// "name": "bootfile-url", 

// "code": 59, 

// "data": "http://deploy.cisco.com/install/ipxe2/ipxeb.efi" 

// } 

], 

"pools": [ 

{ 

"pool": "2001:db8:1234::320 - 2001:db8:1234::1000" 

} 

] 

}, 



Thanks! 
– Diogo 



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