Before you start the migration, meet the following prerequisites:
IPv6 must be configured on all the systems. The systems must be dual-node; that is, they have both IPv4 and IPv6 addresses configured.
Modify the/etc/resolv.conf
file to include the entries for both the IPv4 and IPv6 DNS servers and domain names.
If the DNS servers are not available, add the IPv6 hostname and corresponding IP address entries in the/etc/hosts
file.