Hi Rene,
What is signfinace of TAG value …I see it get changes in examples . For example ,in your document it is 1 and in my example it is 100
R1#sh ipv6 route
IPv6 Routing Table - default - 4 entries
Codes: C - Connected, L - Local, S - Static, U - Per-user Static route
B - BGP, HA - Home Agent, MR - Mobile Router, R - RIP
H - NHRP, I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea
IS - ISIS summary, D - EIGRP, EX - EIGRP external, NM - NEMO
ND - ND Default, NDp - ND Prefix, DCE - Destination, NDr - Redirect
O - OSPF Intra, OI - OSPF Inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2, l - LISP
OE2 ::/0 [110/1], **tag 100**
via FE80::A8BB:CCFF:FE00:100, Ethernet0/0
C 2001:DB8:12:12::/64 [0/0]
via Ethernet0/0, directly connected
L 2001:DB8:12:12::1/128 [0/0]
via Ethernet0/0, receive
L FF00::/8 [0/0]
via Null0, receive
R1#