regression bug 1601813 might be introduced by the patch
Verify on v3.9.40, no error log "Error creating subnet for node" [root@dma39-master-etcd-nfs-1 ~]# oc version oc v3.9.40 kubernetes v1.9.1+a0ce1bc657 features: Basic-Auth GSSAPI Kerberos SPNEGO Server https://dma39-master-etcd-nfs-1:8443 openshift v3.9.40 kubernetes v1.9.1+a0ce1bc657 [root@dma39-master-etcd-nfs-1 ~]# oc get node NAME STATUS ROLES AGE VERSION dma39-master-etcd-nfs-1 Ready <none> 2h v1.9.1+a0ce1bc657 dma39-node-registry-router-1 Ready compute 2h v1.9.1+a0ce1bc657
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2018:2335