en
conf t
ipv6 unicast-routing
int f0/0.<vlanid1>
encapsulation dot1q <vlanid1>
ipv6 add <ipv6 address 1>
int f0/0.<vlanid2>
encapsulation dot1q <vlanid2>
ipv6 add <ipv6 address 2>
int fa0/0
no sh
exit
exit
wr
exit