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Group Replication doesn't like "::ffff:" as an IP Address
Posted by: IGG t
Date: July 10, 2019 08:27AM

I'm trying to set up group replication using 3 x MySQL 8.0.16 databases on 3 x Debian 9.9 (stretch) servers, but when I start up the second Node it fails. The error log reports:

[GCS] Connection attempt from IP address ::ffff: refused. Address is not in the IP whitelist.
But if I add a whitelist:

I get:

[GCS] Invalid IP or subnet mask in the whitelist: "::ffff:";
Is this an issue with the server at my end, or an issue with Group Replication not understanding the IP Address?

My configuration is:

server_id=<different for each one>
group_replication_local_address= "" /*This is different for each one*/
group_replication_group_seeds= ",,"
If I look on the first nodes error log I can see:

Connection attempt from IP address ::ffff: refused. Address is not in the IP whitelist.'
But again, adding it to a whitelist throws the above error about there being an invalid IP Address,

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