Esecuzione del seguente comando per upgrade di una vrf definita solo in ipv4 anche per il protocollo ipv6:
vrf upgrade-cli multi-af-mode common-policies vrf <name_VRF>
You are about to upgrade to the multi-AF VRF syntax commands.
You will lose any IPv6 addresses configured on interfaces
belonging to upgraded VRFs.
Are you sure ? [yes]: yes
Number of VRFs upgraded: 1
vrf definition <name_VRF>