[Kea-users] Converting an ISC IPv6 class definition to Kea syntax

[Marek Hajduczenia]

Dear colleagues, 

 

I ran into a bit of a challenge with the conversion of the config from ISC
to Kea, namely this little class definition gem:

 

class "rpd-1" { match if v6relay( 1, option dhcp6.interface-id ) ~=
"Md1:0/0.0$"; }

 

What it does, as you can tell, it matches on the inner relay interface-id
field in the DHCPv6 messages. Nothing fancy, it does work as tested. 

 

I have been looking at the available options and nothing comes to mind so I
used keama for automatic conversion and it generated something pretty
complex, as follows. Additionally, it is commented out, so I assume this is
a non-working configuration element (?)

 

    "client-classes": [

      {

        "name": "rpd-1"

//      /// match if (v6relay(1, option dhcp6.interface-id)) ~= 'Md1:0/0.0$'

//      "match-if": {

//        "regex-match": {

//          "left": {

//            "v6relay": {

//              "relay": 1,

//              "relay-option": {

//                "option": {

//                  "universe": "dhcp6",

//                  "name": "interface-id",

//                  "code": 18

//                }

//              }

//            }

//          },

//          "right": "Md1:0/0.0$"

//        }

//      }

      }]

 

If I try to remove the comment markup and apply it with Kea 2.4.1, the
parser does not like the "match-if" statement for some reason. I cannot
locate it in the list of Kea statements, so not sure why it would be
generated by keama. However, the bigger question is on how to build a
Kea-compatible match on such embedded message. Any help here would be really
appreciated. 

 

Apr 19 18:54:20 server-kea-node1 systemd[1]: Started Kea DHCPv6 Service.

Apr 19 18:54:20 server-kea-node1 kea-dhcp6[2099]: 2024-04-19 18:54:20.202
ERROR [kea-dhcp6.dhcp6/2099.841038976] DHCP6_INIT_FAIL failed to initialize
Kea server: configuration error using file '/etc/kea/kea-dhcp6.conf':
/etc/kea/kea-dhcp6.conf:118.9-18: syntax error, unexpected constant string,
expecting }

Apr 19 18:54:20 server-kea-node1 systemd[1]: isc-kea-dhcp6-server.service:
Main process exited, code=exited, status=1/FAILURE

Apr 19 18:54:20 server-kea-node1 systemd[1]: isc-kea-dhcp6-server.service:
Failed with result 'exit-code'.

 

Regards

 

Marek

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.isc.org/pipermail/kea-users/attachments/20240419/938ae860/attachment.htm>