[Kea-users] Recieving DHCP4_PACKET_PROCESS_STD_EXCEPTION

Wed Jul 24 20:02:51 UTC 2019

I have submitted a report to gitlab and marked confidential.

Justin Bail
Systems Engineer
Office: (812) 935-2429
Justin.Bail at smithville.com | smithville.com

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Today's Topics:

   1. Re: Recieving DHCP4_PACKET_PROCESS_STD_EXCEPTION
      (Thomas Markwalder)

----------------------------------------------------------------------

Message: 1
Date: Wed, 24 Jul 2019 15:32:58 -0400
From: Thomas Markwalder <tmark at isc.org>
To: kea-users at lists.isc.org
Subject: Re: [Kea-users] Recieving DHCP4_PACKET_PROCESS_STD_EXCEPTION
Message-ID: <3bd49a4b-9885-3b78-92ce-7854a630cf27 at isc.org>
Content-Type: text/plain; charset="utf-8"; Format="flowed"

Hi Justin:

It would help us chase this down if you could send us the PCAP. You can do this by opening a bug issue in gitlab, marking it as confidential, and then attaching the PCAP.

https://gitlab.isc.org/isc-projects/kea/issues

Thanks,

Thomas Markwalder
ISC Software Engineering

On 7/24/19 3:03 PM, Justin Bail wrote:
>
> Setup: Ubuntu server 18.04.2 Kea 1.4.0-P1
>
> We are migrating our subnets from isc dhcp to kea dhcp.? We thought we
> had everything ironed out then this came up.
>
> We get these messages in kea_dhcp.log
>
> ?
>
>
>
> kea_dhcp 2019-07-24 14:57:37.878 ERROR [kea-dhcp4.packets/23825]
> DHCP4_PACKET_PROCESS_STD_EXCEPTION exception occurred during packet
> processing: failed to parse an option '1' holding string value - empty
> value is not accepted
>
> ?
>
> We found this in the messages doc but didn?t find specific information
> to troubleshoot it.
>
> We changed logging to debug with no luck in capturing anything else
> about the discover.
>
> We are only seeing these issues so far when something sends option 60
> information. Specifically Meraki devices.? We are not doing anything
> with option 60 in our config.
>
> The mac address of the device does not appear in the logs which makes
> troubleshooting harder.? I did get the discover in a tcp dump from one
> of the affected devices.? That packet is below with our information
> and the customer?s redacted.
>
> 13:37:41.755777 IP (tos 0x0, ttl 254, id 14712, offset 0, flags
> [none], proto UDP (17), length 382)
>
> ??? gatewayaddress.bootps > harpy.bootps: [udp sum ok] BOOTP/DHCP,
> Request from customer?s mac address (oui Unknown), length 354, hops 1,
> xid 0x54ef0604, Flags [none] (0x0000)
>
> ????????? Gateway-IP the subnet?s gateway here
>
> ????????? Client-Ethernet-Address e0:cb:bc:bc:92:34 (oui Unknown)
>
> ????????? Vendor-rfc1048 Extensions
>
> ??????????? Magic Cookie 0x63825363
>
> ??????????? DHCP-Message Option 53, length 1: Discover
>
> ??????????? Client-ID Option 61, length 7: ether customer?s mac
>
> ??????????? Hostname Option 12, length 22: "customer gear"
>
> ??????????? Vendor-Class Option 60, length 6: "MERAKI"
>
> ??????????? Vendor-Option Option 43, length 3: 1.0.255
>
> ??????????? Parameter-Request Option 55, length 7:
>
> ????????????? Subnet-Mask, Domain-Name, Default-Gateway, BR
>
> ??????????? ??Hostname, Domain-Name-Server, MTU
>
> ??????????? Agent-Information Option 82, length 48:
>
> ????????????? Circuit-ID SubOption 1, length 32: **********
>
> ????????????? Remote-ID SubOption 2, length 12: **************
>
> ??????????? END Option 255, length 0
>
> ??????????? SS Option 16, length 0
>
> ??????????? PAD Option 0, length 0, occurs 2|[rfc1048]
>
> Justin Bail
> Systems Engineer
> Office:(812) 935-2429
> Justin.Bail at smithville.com|smithville.com
> <http://www.smithville.com/
> ille.com>
>
>
>
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