IPV6 PING FAILED . . WHAT IS THE CAUSE?

PLEASE WHAT COULD BE THE CAUSE OF THE IPV6 PING FAILURE BELOW?

interface Serial0/0/0
 ip address 155.7.0.4 255.255.255.0
 ip rip advertise 10
 encapsulation frame-relay
 ip split-horizon
 frame-relay map ipv6 FE80::2 405
 frame-relay map ipv6 FE80::3 405
 frame-relay map ipv6 FE80::1 405
 frame-relay map ipv6 FE80::5 405 broadcast
 frame-relay map ip 155.7.0.1 405
 frame-relay map ip 155.7.0.2 405
 frame-relay map ip 155.7.0.3 405
 frame-relay map ip 155.7.0.5 405 broadcast
 no frame-relay inverse-arp
end
Rack7R4#ping ipv6 fe80::5
% Unrecognized host or address, or protocol not running.
Rack7R4#
interface Serial0/0/0
 ip address 155.7.0.5 255.255.255.0
 ip rip advertise 10
 encapsulation frame-relay
 frame-relay map ipv6 FE80::2 501 broadcast
 frame-relay map ipv6 FE80::3 501 broadcast
 frame-relay map ipv6 FE80::4 501 broadcast
 frame-relay map ipv6 FE80::1 501 broadcast
 frame-relay map ip 155.7.0.4 504 broadcast
 frame-relay map ip 155.7.0.3 503 broadcast
 frame-relay map ip 155.7.0.2 502 broadcast
 frame-relay map ip 155.7.0.1 501 broadcast
 no frame-relay inverse-arp
end
Rack7R5#

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Received on Fri Apr 02 2010 - 00:55:12 ART