Packets from net 10 (no, not the lyrics)

Mailman List Mirror (Read Only)
1

access-list 50 deny 128.0.0.0 0.0.255.255
access-list 50 deny 191.255.0.0 0.0.255.255

Agreed. Although these two prefixes are no longer a problem
and you might want to remove them from this ACL.