There is a command group 'az_network_vpn gateway_connection_packet capture'. This group of commands could 'manage site to site vpn gateway connections packet capture'. 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_network_vpn gateway_connection_packet capture_start'.The syntax is: az network vpn-gateway connection packet-capture start [--connection-name]
                                                       [--filter-data]
                                                       [--gateway-name]
                                                       [--ids]
                                                       [--link-connection-names]
                                                       [--no-wait {0, 1, f, false, n, no, t, true, y, yes}]
                                                       [--resource-group]
                                                       [--subscription]. The 1th example of the child command would be to use it to 'starts packet capture on vpn connection', the syntax is: az network  vpn-gateway connection packet-capture start -g MyResourceGroup --gateway-name MyVpnGateway --connection-name MyVpnGatewayConnection --link-connection-names MyVpnGatewayConnection. The parameter '--connection-name --name -n' is optional. the name of the vpn connection.. The parameter '--filter-data' is optional. start packet capture parameters on vpn connection.. The parameter '--gateway-name' is optional. the name of the gateway.. The parameter '--ids' is optional. one or more resource ids (space-delimited). it should be a complete resource id containing all information of 'resource id' arguments. you should provide either --ids or other 'resource id' arguments.. The parameter '--link-connection-names' is optional. list of site link connection names.  support shorthand-syntax, json-file and yaml-file. try "??" to show more.. The parameter '--no-wait' is optional. do not wait for the long-running operation to finish.. The parameter '--resource-group -g' is optional. name of resource group. you can configure the default group using `az configure --defaults group=<name>`.. The parameter '--subscription' is optional. name or id of subscription. you can configure the default subscription using `az account set -s name_or_id`.. 