kubeadm init stuck at "Waiting for the kubelet to boot up the control plane"

In pre-flight I see the following warning

connection to "10.96.0.0/12" uses proxy "http://127.0.0.1:45007". This may lead to malfunctional cluster setup. Make sure that Pod and Services IP ranges specified correctly as exceptions in proxy configuration .

I use kubernetes v1.15, My swap is off, Docker runtime has been set it correctly.