There is a command group 'az_eventhubs_namespace_network rule set_virtual network rule'. This group of commands could 'manage azure eventhubs subnet rule in networkruleset for namespace'. The group of commands has global parameter '--debug' which means 'Increase logging verbosity to show all debug logs.'. The group of commands has global parameter '--help -h' which means 'Show this help message and exit.'. The group of commands has global parameter '--only-show-errors' which means 'Only show errors, suppressing warnings.'. The group of commands has global parameter '--output -o' which means 'Output format.'. The group of commands has global parameter '--query' which means 'JMESPath query string. See <a href="http://jmespath.org/">http://jmespath.org/</a> for more information and examples.'. The group of commands has global parameter '--subscription' which means 'Name or ID of subscription. You can configure the default subscription using `az account set -s NAME_OR_ID`.'. The group of commands has global parameter '--verbose' which means 'Increase logging verbosity. Use --debug for full debug logs.'. This group contains a child command 'az_eventhubs_namespace_network rule set_virtual network rule_add'.The syntax is: az eventhubs namespace network-rule-set virtual-network-rule add --name
                                                                 --resource-group
                                                                 [--subnet]. The 1th example of the child command would be to use it to 'add a virtualnetwork rule in networkruleset for a namespace', the syntax is: az eventhubs namespace network-rule-set virtual-network-rule add --resource-group myresourcegroup --namespace-name mynamespace --subnet id=/subscriptions/{subscriptionId}/resourceGroups/{resourcegroup}/providers/Microsoft.Network/virtualNetworks/{vnetname}/subnets/{subnetname} ignore-missing-endpoint=True. The parameter '--name --namespace-name -n' is required. It is used to name of the namespace.. The parameter '--resource-group -g' is required. It is used to name of resource group. you can configure the default group using `az configure --defaults group=<name>`.. The parameter '--subnet' is optional. list virtualnetwork rules.. 