[Kea-users] Recieving DHCP4_PACKET_PROCESS_STD_EXCEPTION
Thomas Markwalder
tmark at isc.org
Wed Jul 24 19:32:58 UTC 2019
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/>
>
>
>
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