We are seeing a strange issue on our multiple DC `v2.2.13` Apache Cassandra ring cluster that is running on AWS.
Our DCs are in the us-east-1/eu-west-1/ap-northeast-1 regions and we are using IPv6 for Cassandra communication.
We have been able to successfully add nodes to the us-east-1 and eu-west-1 DCs, but we are hitting a strange intermittent issue when trying to add additional nodes in the ap-northeast-1 region. The bootstrapping process will start and then immediately complete without streaming any data. (Note: we have triple-checked that the new nodes are _not_ seed nodes). Again, this appears to be intermittent.
Has anyone seen this before?