When static VIPAs are configured for use with IPv6, it is recommended that the prefixes of the IPv6 VIPA addresses be different than the prefixes used for addresses assigned to real interfaces. This reduces the likelihood of address collisions between the manually configured VIPA addresses and the autoconfigured addresses of the real interfaces.
To allow other hosts that share links with the z/OS® TCP/IP stack to access the IPv6 VIPA addresses, without the need for manual route configuration, a router on each of the links should include the VIPA prefix in its router advertisements. The router advertisements should define the prefix as being on-link and should indicate that the prefix should not be used for autoconfiguration.