Sanity-check failure: "The lease <ip> with subnet-id x failed subnet-id checks (the lease should have subnet-id x+1)"
We are testing removing and adding subnets to our dhcp4 config. Now when we start kea or issue the config-reload command, we get warnings in the kea log eg
"2020-05-19 09:49:41.335 WARN [kea-dhcp4.dhcpsrv/9] DHCPSRV_LEASE_SANITY_FAIL The lease 10.0.0.50 with subnet-id 3 failed subnet-id checks (the lease should have subnet-id 4)."
The warnings seem include all leases on multiple (but not all) subnets. Source just mentions that each of these "wasn't the right subnet".
What is the significance of this sanity-check failure? Will leasing\renewal be affected? Any idea how to prevent or fix when it starts occuring?