Configurations to use IPv4 networks
The following Preferred Network configurations instruct NetBackup to use only IPv4 addresses as targets in outbound calls for the currently selected hosts. The configurations satisfy a topology where all backup traffic uses an IPv4 network and other traffic uses other networks.
One configuration uses the Prohibited directive (Figure: Prohibit IPv6 addresses as targets) and one configuration uses the Match directive (Figure: Match IPv4 addresses as targets).
The more efficient method to specify one address family, (IPv4, in this case), is to prohibit IPv6. The behavior of the Match directive is not as exclusive as Prohibited. In this case, Match may not necessarily exclude other address families.
Figure: Prohibit IPv6 addresses as targets uses the Prohibited directive with a wildcard to indicate to NetBackup to not consider using any IPv6 addresses. In this situation, NetBackup must use an IPv4 address.
Figure: Match IPv4 addresses as targets uses the Match directive with a wildcard to indicate to NetBackup to prefer IPv4 addresses. In this case, NetBackup tries to use an IPv4 address, but may consider IPv6 addresses if necessary.
