CmdAdd (shim): CNI request failed with status 400 -- code = Unknown desc = failed to create pod network sandbox k8s_test_containerl_test_ns_da4c363a-a39d-4780-b4a2-6df7d83e9b31_0(faa5e97c075900007547a0093e7db9f299e6aadb1b4f08da0274129b226d0780): error adding pod test_ns_test_containerl to CNI network "multus-cni-network": plugin type="multus-shim" name="multus-cni-network" failed (add): CmdAdd (shim): CNI request failed with status 400: 'ContainerID:"faa5e97c075900007547a0093e7db9f299e6aadb1b4f08da0274129b226d0780" Netns:"/var/run/netns/6196a7b9-fa21-424d-99f3-c2e8a171781f" IfName:"eth0" Args:"IgnoreUnknown=1;K8S_POD_NAMESPACE=test_ns;K8S_POD_NAME=test_containerl;K8S_POD_INFRA_CONTAINER_ID=faa5e97c075900007547a0093e7db9f299e6aadb1b4f08da0274129b226d0780;K8S_POD_UID=da4c363a-a39d-4780-b4a2-6df7d83e9b31" Path:"" ERRORED: error configuring pod [test_ns/test_containerl] networking: [test_ns/test_containerl/da4c363a-a39d-4780-b4a2-6df7d83e9b31:test-nad]: error adding container to network "test-nad": plugin type="macvlan" failed (add): error at storage engine: Could not allocate IP in range: ip: 192.168.0.1 / - 192.168.0.62 / range: 192.168.0.0/26 / excludeRanges: [192.168.0.1/32 192.168.0.2/32 192.168.0.3/32 192.168.0.4/32 192.168.0.5/32 192.168.0.11 192.168.0.12]

It can be seen that multus using whereabout is unable to clear stale entries in the IPPool and overlappingrangeipreservations

It should free have free the unused IPool and overlapping range. We need to clear them manually.