Hi,

If you set
    "loggers": [
      [...]
      {
        "debuglevel": 99,
        "name": "kea-dhcp6.packets",
        "severity": "DEBUG"
      },

Then you should have a log such as:

2024-12-19 09:12:54.686 INFO  [kea-dhcp6.packets/xx.xx] DHCP6_PACKET_RECEIVED 
duid=[00:01:xxxxxxxxxxxx], [no hwaddr info], tid=xx: SOLICIT (type 1) received 
from xxxx to xxx on interface eth1

Together with the content of the packet

msg_type=SOLICIT (1), trans_id=xx,
options:
  type=00001, len=00014: 00:01:xxxxxxxxxxxxxxx
  type=00003(IA_NA), len=00012: iaid=xx, t1=0, t2=0
  [...]


________________________________
From: Kea-users <kea-users-boun...@lists.isc.org> on behalf of Templin (US), 
Fred L via Kea-users <kea-users@lists.isc.org>
Sent: Wednesday, December 18, 2024 5:34 PM
To: Kea user's list <kea-users@lists.isc.org>
Cc: Templin (US), Fred L <fred.l.temp...@boeing.com>
Subject: [Kea-users] kea-dhcp6 packet-level debugging help

Hello, I am writing a little program that acts like a DHCPv6 client and talks 
to the kea-dhcp6
server over a dedicated virtual Ethernet interface pair. Since I am crafting 
the DHCPv6 client
side packets locally, I would like to set UDP checksum to 0 so I don't have to 
bother with
the Internet checksum. But, kea-dhcp6 seems to be ignoring my packets.

Will kea-dhcp6 accept DHCPv6 Solicit messages with UDP checksum set to 0? And, 
does it
have a debug facility that prints per-packet processing statistics? Right now, 
when I run with
the "-d" flag set, I see nothing in the logfile when the suspect DHCPv6 Solicit 
message is
sent - it seems like I should see something if kea-dhcp6 receives the packet, 
shouldn't it?

Thank you - Fred
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