[Kea-users] ipv6 being ignored

[Eric Graham]

Hi Alan,

What does Kea have in the DHCPv6 log for this request? It may help to increase verbosity. Since this is subnet id 11, I assume you have other subnets that are already configured and working; is this accurate?
________________________________
From: Kea-users <kea-users-bounces at lists.isc.org> on behalf of Alan Batie <alan at peak.org>
Sent: Friday, December 9, 2022 11:23 AM
To: kea-users at lists.isc.org <kea-users at lists.isc.org>
Subject: [Kea-users] ipv6 being ignored

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Looking for suggestions - tshark shows forwarded dhcpv6 requests being
received, however they're being ignored:

User Datagram Protocol, Src Port: 547, Dst Port: 547
     Source Port: 547
     Destination Port: 547
     Length: 341
     Checksum: 0x712b [unverified]
     [Checksum Status: Unverified]
     [Stream index: 0]
     [Timestamps]
         [Time since first frame: 0.000000000 seconds]
         [Time since previous frame: 0.000000000 seconds]
     UDP payload (333 bytes)
DHCPv6
     Message type: Relay-forw (12)
     Hopcount: 1
     Link address: 2607:f678:1fff:1031::1
     Peer address: fe80::4a77:46ff:fef9:5bb0
     Relay Message
         Option: Relay Message (9)
         Length: 260
         DHCPv6
             Message type: Relay-forw (12)
             Hopcount: 0
             Link address: ::
             Peer address: fe80::4a77:46ff:fef9:5bb0
             Relay Message
                 Option: Relay Message (9)
                 Length: 107
                 DHCPv6
                     Message type: Solicit (1)
                     Transaction ID: 0xf37d54
                     Elapsed time
                         Option: Elapsed time (8)
                         Length: 2
                         Elapsed time: 655350ms
                     Option Request
                         Option: Option Request (6)
                         Length: 30
                         Requested Option code: Vendor-specific
Information (17)
                         Requested Option code: SIP Server Domain Name
List (21)
                         Requested Option code: SIP Servers IPv6 Address
List (22)
                         Requested Option code: DNS recursive name
server (23)
                         Requested Option code: Domain Search List (24)
                         Requested Option code: Simple Network Time
Protocol Server (31)
                         Requested Option code: NTP Server (56)
                         Requested Option code: Dual-Stack Lite AFTR
Name (64)
                         Requested Option code: Prefix Exclude (67)
                         Requested Option code: SOL_MAX_RT (82)
                         Requested Option code: INF_MAX_RT (83)
                         Requested Option code: S46 MAP-E Container (94)
                         Requested Option code: S46 MAP-T Container (95)
                         Requested Option code: S46 Lightweight 4over6
Container (96)
                         Requested Option code: Server unicast (12)
...



Relevant configuration:

   "Dhcp6": {
     "interfaces-config": {
       "interfaces": [ "ens160/2607:f678::16:91" ],
     },
...
     "subnet6": [
...
       {
         "id": 11,
         "subnet": "2607:f678:1fff:1031::/64",
         "pools": [
           {
             "pool": "2607:f678:1fff:1031::1000 - 2607:f678:1fff:1031::1fff"
           }
         ],
         "pd-pools": [
         {
           # Customer lan delegated prefixes
           "prefix": "2607:f678:2000::",
           "prefix-len": 36,
           "delegated-len": 60,
         }
         ],
         "relay": {
           "ip-addresses": [ "2607:f678:1fff:1031::1" ]
         }
       }

kea is actually listening:

netstat -plan | grep :547
udp6       0      0 2607:f678::16:91:547    :::*
        18503/kea-dhcp6
udp6       0      0 fe80::250:56ff:fe99:547 :::*
        18503/kea-dhcp6
udp6       0      0 ff02::1:2:547           :::*
        18503/kea-dhcp6


--
ALAN BATIE
Senior Systems Engineer
541-754-7325
alan.batie at peakinternet.com <mailto:alan.batie at peakinternet.com>
www.peakinternet.com<http://www.peakinternet.com> <https://www.peakinternet.com>

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