kubectl unable to connect minikube on VPN

I installed minikube in my Mac, and I noticed that kubectl is unable to connect to it while my Mac in on VPN (Cisco Anyconnect).

$ kubectl cluster-info
Kubernetes master is running at https://192.168.99.100:8443

To further debug and diagnose cluster problems, use ‘kubectl cluster-info dump’.
Unable to connect to the server: dial tcp 192.168.99.100:8443: i/o timeout

Here are the specs:

$ sw_vers
ProductName: Mac OS X
ProductVersion: 10.13.6
BuildVersion: 17G3025

$ minikube version
minikube version: v0.30.0

$ VBoxManage -v
5.2.22r126460

After a quick troubleshooting, I think it is caused by the VPN routing – It is configured as the gateway for everything.

Thanks to this solution that I found online. 

# Set port forwarding for the minikube vm to forward port 8443 on 127.0.0.1 to port 8443 in the VM.

VBoxManage controlvm minikube natpf1 k8s-apiserver,tcp,127.0.0.1,8443,,8443

# Create a new kubectl context and use it when on VPN.

kubectl config set-cluster minikube-vpn --server=https://127.0.0.1:8443 --insecure-skip-tls-verify

kubectl config set-context minikube-vpn --cluster=minikube-vpn --user=minikube

# Switch back to the normal minikube context when off VPN.

kubectl config use-context minikube

Now let me try again.

$ kubectl cluster-info
Kubernetes master is running at https://127.0.0.1:8443
CoreDNS is running at https://127.0.0.1:8443/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy

To further debug and diagnose cluster problems, use ‘kubectl cluster-info dump’.