I've configured two routers connected through fastethernet interface with an ipv6 address, however I can't ping each other although interfaces are up.
P1R4#sh ipv6 int brief
P1R2#sh ipv6 int brief
ATM0 [administratively down/down]
P1R2#ping ipv6 2001:410:1:2:212:43FF:FEE3:C600
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:410:1:2:212:43FF:FEE3:C600, timeout is 2 seconds:
Success rate is 0 percent (0/5)
Anyone knows why I can't ping it?