IPv4 is the default protocol when you register the Plug-in for VMware vSphere with SnapCenter Server and the vCenter Server. To enable IPv6 protocol support, you must add the enable.ipv6=true parameter in the scbr.override file.
SnapCenter uses the name of the Plug-in for VMware vSphere host for registration. If the IPv6 address of the host is not resolvable on the SnapCenter Server host, then you must make an entry in the hosts file (/etc/hosts) for resolving the IPv6 address. You also must make a similar entry in the Plug-in for VMware vSphere host file for resolving the SnapCenter IPv6 address.
If the Plug-in for VMware vSphere host has only an IPv6 protocol stack, then the Plug-in for VMware vSphere registration with SnapCenter and vCenter occurs through the IPv6 protocol. In this case, there is no need to add the enable.ipv6=true parameter in the scbr.override file. The SnapCenter and vCenter registration will be IPv6 protocol enabled.
If the Plug-in for VMware vSphere host has only an IPv4 protocol stack, then the Plug-in for VMware vSphere registration with SnapCenter and vCenter occurs through the IPv4 protocol. Even if you add the enable.ipv6=true parameter in the scbr.override file, the SnapCenter and vCenter registration will be IPv4 protocol enabled.
If the Plug-in for VMware vSphere host has both an IPv4 and an IPv6 protocol stack, then the Plug-in for VMware vSphere registration with SnapCenter and vCenter occurs through the IPv4 protocol by default. To use IPv6 protocol for registration, you must add the enable.ipv6=true parameter in the scbr.override file.
When you add or upgrade the Plug-in for VMware vSphere using the SnapCenter GUI, you must enclose the vCenter Server IP address in square brackets in the installation wizard.
When you specify the host name or an IPv6 address in the Add Host wizard, the following error message might be displayed: Object reference not set to an instance of an object
Select the Skip preinstall checks check box and continue with adding the host.
To enable IPv6, add the enable.ipv6=true parameter.
If you want the registration to occur through a specific Ethernet interface, then you must add the interface to the scbr.override file using the name of the interface as the value in the parameter, as follows:
preferred.ipv4.interface = Name of the interface to prefer IPv4 communication
preferred.ipv6.interface = Name of the interface to prefer IPv6 communication