Hi,
Provided you have no other ACL configured inbound on this interface
can you create an ACL like this on .10 then ping from .9 and issue sh access-list icmp-count
ip access-list extended icmp-count
permit icmp any any
permit ip any any
int f0/1
ip access-group icmp-count in
Otherwise you can do debug ip icmp on .10 or even configure a MQC policy with a class-map for icmp
All these to verify you receive on this interface then you must verify on .9 that you get the replies
Regards.
Alain
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