MegaCorp is running Smartcenter R70, some Gateways at R65 and some other Gateways with
R60. Management wants to upgrade to the most comprehensive IPv6 support. What should the
administrator do first?
Upgrade Smartcenter to R77 first.
Upgrade R60-Gateways to R65.
Upgrade every unit directly to R77.
Check the ReleaseNotes to verify that every step is supported.