Issue while setting up CloudStack Advance Zone with security group

Question

Apache CloudStack v4.17.2

I am trying to setup CloudStack Advance Zone with security groups.

I have two network bridges cloudbr0 (10.4.1.1/16) and cloudbr1 (10.6.1.1/16). I am using cloudbr0 for Management Network and cloudbr1 for the Guest Network.

I am trying to configure the first host and the management server on the same system. Below is configuration for Zone Setup

Zone:
    IPV4 DNS: 8.8.8.8
    Internal DNS: 10.4.1.1
Pysical Network 1:
    Management Traffic: cloudbr0
    Guest Traffic: cloudbr1
Pod:
    Gateway: 10.4.1.1
    Netmask: 255.255.0.0
    IP Range: 10.4.2.1 to 10.4.2.255
Guest Traffic: 
    Gateway: 10.6.1.1
    Netmask: 255.255.0.0
    IP Range 10.6.2.1 to 10.6.2.255
Host:
    IP: 10.4.1.20
    User: root
    Password: password
    Tag: h1

However, the zone creation keeps failing adding host with the error message - failed to add host as resource already exists as LibvirtComputingResource.

For some reason it seems like CloudStack is trying to add the same host twice.

Any suggestions would be greatly appreciated.