DHCP errors in logs

michmoor

Receiving the following DHCP message in my system.log
I have checked a few times to make sure there isnt an overlap but each sub-intf is in its own vlan with its own subnet. Anyone come across this error?

/services_dhcp.php: The command '/usr/local/sbin/dhcpd -user dhcpd -group _dhcp -chroot /var/dhcpd -cf /etc/dhcpd.conf -pf /var/run/dhcpd.pid igc0 lagg0.11 lagg0.14 lagg0.23 lagg0.17 lagg0.15 lagg0.3' returned exit code '1', the output was 'Internet Systems Consortium DHCP Server 4.4.2-P1 Copyright 2004-2021 Internet Systems Consortium. All rights reserved. For info, please visit https://www.isc.org/software/dhcp/ Config file: /etc/dhcpd.conf Database file: /var/db/dhcpd.leases PID file: /var/run/dhcpd.pid Wrote 0 class decls to leases file. Wrote 0 deleted host decls to leases file. Wrote 0 new dynamic host decls to leases file. Wrote 35 leases to leases file. Multiple interfaces match the same subnet: lagg0.15 lagg0.3 Interface lagg0.3 matches multiple shared networks If you think you have received this message due to a bug rather than a configuration issue please read the section on submitting bugs on either our web page at www.isc.org or in the README file before submitting a bug. These pages explain the proper process and the information we find helpful for debugging. exiting.'

michmoor

Multiple interfaces match the same subnet: lagg0.15 lagg0.3 Interface lagg0.3 matches multiple shared networks If you think you have received this message due to a bug rather than a configuration issue please read the section on submitting bugs on either our web page at www.isc.org or in the README file before submitting a bug. These pages explain the proper process and the information we find helpful for debugging. exiting.'

I have checked both interfaces and for sure there is no overlap. I even deleted the interfaces and re-added.
This is preventing devices in VLAN3[lagg0.3] from receiving dhcp addresses

michmoor

Solved it..

config.xml was way off.
It had my VIPs having the wrong OPT assigned.
So OPT3 belongs to VLAN3 under interfaces but under the xml OPT4 belongs to VLAN3

The fix is deleting the VIPs and re-adding them. This was a tough one..

stephenw10

Hmm, this is exactly the sort of thing that might cause the VLAN config change to fail. I wonder if you're seeing interfaces use the non-primary IP...
https://redmine.pfsense.org/issues/11545