[Kea-users] KEA and pxeboot

[Stephen Berg (Code 7309)]

On 2/28/22 07:38, Stephen Berg (Code 7309) via Kea-users wrote:
> The kea server and this client are both on the same subnet.
>
> dhcp-socket-type is set to "raw".
>
I think I found the problem.  I'm setting up kea to be dhcp for about 5 
or 6 subnets.  Eventually I'll set up relay agents on the other subnets 
right now I've just got three subnets to set up and I'm testing on just 
one client that is on the same subnet as kea.

If I comment out the other subnets out of the kea-dhcp4.conf file I get 
a good dhcp reservation and pxeboot.  I've added "id" to each subnet and 
that doesn't break it.  But then when I reenable the other other subnets 
I'm back to failing.

So now I've got the config shown below.  I've sanitized most everything 
but the setup matches what I've got here.  I also have the reservations 
listed in an included file but I'm showing them as inline here.  I 
wouldn't think that would make a difference.  The client called host6 is 
the one I'm trying to pxeboot currently. When the first and second 
subnets are enabled nothing seems to work.  If I only have the 
192.168.8.0/24 subnet enabled I get a good dhcp lease and pxeboot works.


--------------
// This is kea-dhcp4.conf
{
"Dhcp4": {
     // Add names of your network interfaces to listen on.
     "interfaces-config": {
         "interfaces": [ "eth0" ],
     "dhcp-socket-type": "raw"
     },
     "control-socket": {
         "socket-type": "unix",
         "socket-name": "/tmp/kea4-ctrl-socket"
     },
     "lease-database": {
          "type": "mysql",
          "name": "kea",
          "user": "kea",
          "password": "pw-goes-here",
          "host": "localhost",
          "port": 3306

      },
     "expired-leases-processing": {
         "reclaim-timer-wait-time": 10,
         "flush-reclaimed-timer-wait-time": 25,
         "hold-reclaimed-time": 3600,
         "max-reclaim-leases": 100,
         "max-reclaim-time": 250,
         "unwarned-reclaim-cycles": 5
     },

     "renew-timer": 43200,
     "rebind-timer": 75600,
     "valid-lifetime": 86400,

     "option-data": [
         {
             "name": "domain-name-servers",
             "data": "192.168.100.20, 192.168.100.10"
         },
         {
             "name": "domain-name",
             "data": "example.com"
         },
         {
             "name": "domain-search",
             "data": "thisorg.example.com, example.com"
         },
         {
             "name": "default-ip-ttl",
             "data": "0xf0"
         }
     ],

     "subnet4": [
         {
             "id": 2,
             "subnet": "192.168.2.0/24",
             "option-data": [ { "name": "routers", "data": "192.168.2.1" 
} ],
             "reservations": [
         { "ip-address": "192.168.2.25",    "hostname": "host1", 
"hw-address": "aa:aa:aa:bb:bb:bb" },
         { "ip-address": "192.168.2.26",    "hostname": "host2", 
"hw-address": "bb:bb:bb:cc:cc:cc" }
         ]
         },
         {
             "id": 4,
             "subnet": "192.168.4.0/24",
             "option-data": [ { "name": "routers", "data": "192.168.4.1" 
} ],
             "reservations": [
         { "ip-address": "192.168.4.35",    "hostname": "host3", 
"hw-address": "aa:aa:aa:bb:bb:dd" },
         { "ip-address": "192.168.4.36",    "hostname": "host4", 
"hw-address": "bb:bb:bb:cc:cc:ee" }
         ]
         },
         {
             "id": 8,
             "subnet": "192.168.8.0/24",
         "option-data": [ { "name": "routers", "data": "192.168.8.1" } ],
             "reservations": [
         { "ip-address": "192.168.8.45",    "hostname": "host5", 
"hw-address": "aa:aa:aa:bb:bb:ff" },
         { "ip-address": "192.168.8.46",    "hostname": "host6", 
"hw-address": "bb:bb:bb:cc:cc:11",
         "next-server": "192.168.8.9", "boot-file-name": "pxelinux.0" }
         ]
     }
     ],

     "loggers": [
     {
         "name": "kea-dhcp4",
         "output_options": [
             {
                 "output": "/var/log/kea/kea-dhcp4.log"
             }
         ],
         "severity": "DEBUG",
         "debuglevel": 99
     }
   ]
}
}



-- 
Stephen Berg, IT Specialist, Ocean Sciences Division, Code 7309
Naval Research Laboratory
stephen.berg at nrlssc.navy.mil <- (Preferred contact)
W:   (228) 688-5738
DSN: (312) 823-5738
C:   (228) 365-0162