[Kea-users] error on attempt to receive packet: Truncated DHCPv4 packet

[Darren Ankney]

Hi,

This is normal for the moment.  I remember seeing something about this
somewhere but can't find it now.  The general gist was that there
wasn't actually a truncated packet received, it is some effect created
during the interface listening process I think.  I cannot remember any
further detail than that.  if you see this at some other time than
startup, then you should become concerned.

Thank you,
Darren Ankney

On Thu, Dec 18, 2025 at 8:13 AM lejeczek via Kea-users
<kea-users at lists.isc.org> wrote:
>
> Hi.
>
> I've a seemingly running & healthy kea-dhcp4 but upon start it logs:
> ...
> Dec 18 14:08:18 kea-dhcp4[1947617]: 2025-12-18 14:08:18.269 ERROR [kea-dhcp4.packets/1947617.139743392213120] DHCP4_BUFFER_RECEIVE_FAIL error on attempt to receive packet: Truncated DHCPv4 packet (len=72) received, at least 236 is expected.
> Dec 18 14:08:18 kea-dhcp4[1947617]: 2025-12-18 14:08:18.269 ERROR [kea-dhcp4.packets/1947617.139743392213120] DHCP4_BUFFER_RECEIVE_FAIL error on attempt to receive packet: Truncated DHCPv4 packet (len=72) received, at least 236 is expected.
> ...
>
> This is on Centos 9 and in case it might matter, with bridge ifaces created by networkmanager.
> Wanted to ask if it's something to worry about and if so then how to "fix" it?
> thanks, L.
> --
> ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information.
>
> To unsubscribe visit https://lists.isc.org/mailman/listinfo/kea-users.
> Kea-users at lists.isc.org