MongoDB Free Monitoring Doesn't Work On IPv6 Only Enviroments

Free monitoring doesn’t work on ipv6 only environment.

rs0 [direct: primary] test> db.enableFreeMonitoring()
Unable to get immediate response from the Cloud Monitoring service. Please check your firewall settings to ensure that mongod can communicate with ''
rs0 [direct: primary] test> 
(To exit, press Ctrl+C again or Ctrl+D or type .exit)
rs0 [direct: primary] test> 
root@engine-v6-only:~/hivesmartcontracts# host is an alias for has address

It appears as if doesn’t have a v6 address.