This counts the number of times an FCIP Special Frame was received on this link carrying a destination FC Fabric Entity WWN that did not match what was expected. A nonzero count here specifically suggests a remote entity attempting to establish the link is presenting the wrong WWN, which could be simple misconfiguration on the remote side, or in a security-sensitive extension, an unauthorized connection attempt, distinct from the general connectivity-focused counters elsewhere in this table. If this link is configured to only accept a specific remote WWN, a climbing count here would mean something is trying to connect with a different, non-matching WWN, worth investigating for either a config typo or a security concern.