MySQL InnoDB Cluster - Add instance issue with local port
Your IP ranges most probably don't fall in the range of IPs that would be automatically added to the allowlist: https://dev.mysql.com/doc/refman/8.0/en/group-replication-ip-address-permissions.html
For that reason, you must manually configure the allowlist: https://dev.mysql.com/doc/mysql-shell/8.0/en/configuring-innodb-cluster.html#create-allowlist-servers