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<tt>Hi Justin:<br>
<br>
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.<br>
<br>
<a class="moz-txt-link-freetext" href="https://gitlab.isc.org/isc-projects/kea/issues">https://gitlab.isc.org/isc-projects/kea/issues</a><br>
<br>
<br>
Thanks,<br>
<br>
Thomas Markwalder<br>
ISC Software Engineering<br>
<br>
<br>
</tt><br>
<div class="moz-cite-prefix">On 7/24/19 3:03 PM, Justin Bail wrote:<br>
</div>
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cite="mid:026fc32320cf44e4b1cc5236a82c2669@smithville.com">
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<p class="MsoNormal">Setup: Ubuntu server 18.04.2 Kea 1.4.0-P1<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We are migrating our subnets from isc dhcp
to kea dhcp. We thought we had everything ironed out then
this came up.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We get these messages in kea_dhcp.log <o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Segoe
UI",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt">“<o:p></o:p></span></p>
</td>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal">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
<o:p></o:p></p>
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<p class="MsoNormal" style="text-autospace:none">“<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We found this in the messages doc but
didn’t find specific information to troubleshoot it.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We changed logging to debug with no luck in
capturing anything else about the discover.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">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.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">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.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">13:37:41.755777 IP (tos 0x0, ttl 254, id
14712, offset 0, flags [none], proto UDP (17), length 382)<o:p></o:p></p>
<p class="MsoNormal"> 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)<o:p></o:p></p>
<p class="MsoNormal"> Gateway-IP the subnet’s gateway
here<o:p></o:p></p>
<p class="MsoNormal"> Client-Ethernet-Address
e0:cb:bc:bc:92:34 (oui Unknown)<o:p></o:p></p>
<p class="MsoNormal"> Vendor-rfc1048 Extensions<o:p></o:p></p>
<p class="MsoNormal"> Magic Cookie 0x63825363<o:p></o:p></p>
<p class="MsoNormal"> DHCP-Message Option 53, length
1: Discover<o:p></o:p></p>
<p class="MsoNormal"> Client-ID Option 61, length 7:
ether customer’s mac<o:p></o:p></p>
<p class="MsoNormal"> Hostname Option 12, length 22:
"customer gear"<o:p></o:p></p>
<p class="MsoNormal"> Vendor-Class Option 60, length
6: "MERAKI"<o:p></o:p></p>
<p class="MsoNormal"> Vendor-Option Option 43, length
3: 1.0.255<o:p></o:p></p>
<p class="MsoNormal"> Parameter-Request Option 55,
length 7:<o:p></o:p></p>
<p class="MsoNormal"> Subnet-Mask, Domain-Name,
Default-Gateway, BR<o:p></o:p></p>
<p class="MsoNormal"> Hostname, Domain-Name-Server,
MTU<o:p></o:p></p>
<p class="MsoNormal"> Agent-Information Option 82,
length 48:<o:p></o:p></p>
<p class="MsoNormal"> Circuit-ID SubOption 1,
length 32: **********<o:p></o:p></p>
<p class="MsoNormal"> Remote-ID SubOption 2, length
12: **************<o:p></o:p></p>
<p class="MsoNormal"> END Option 255, length 0<o:p></o:p></p>
<p class="MsoNormal"> SS Option 16, length 0<o:p></o:p></p>
<p class="MsoNormal"> PAD Option 0, length 0, occurs
2|[rfc1048]<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p style="MARGIN-BOTTOM: 6pt; MARGIN-TOP: 6pt"><font
face="Arial"><span style="FONT-WEIGHT: bold; COLOR: #000000">Justin
Bail</span><br>
<span style="FONT-SIZE: 11pt; COLOR: #000000">Systems
Engineer</span><br>
<span style="FONT-SIZE: 9pt; FONT-WEIGHT: bold">Office:</span><span
style="FONT-SIZE: 9pt">
</span><span style="FONT-SIZE: 9pt">(812) 935-2429</span><span
style="FONT-SIZE: 9pt"></span></font><span
style="FONT-SIZE: 9pt"><br>
</span><font face="Arial"><span style="FONT-SIZE: 9pt; COLOR:
#000000"><a href="Justin.Bail@smithville.com"
moz-do-not-send="true">Justin.Bail@smithville.com</a></span><span
style="FONT-SIZE: 9pt"> </span><span style="FONT-SIZE:
9pt; COLOR: #000000"> |</span><span style="FONT-SIZE: 9pt">
</span></font><a style="FONT-SIZE: 9pt; TEXT-DECORATION:
underline; COLOR: #000000" href="http://www.smithville.com/"
moz-do-not-send="true"><font face="Arial">smithville.com</font></a><br>
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<br>
<br>
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