My FreeNAS box has been acting weird for a while. My log file is filled with the following:
Mar 21 06:57:46 freenas smbd[79405]: STATUS=daemon 'smbd' finished starting up and ready to serve connectionsmatchname: host name/name mismatch: 192.168.0.249 != (NULL)
Mar 21 06:57:46 freenas smbd[79405]: [2015/03/21 06:57:46.036921, 0] ../source3/lib/util_sock.c:1199(get_remote_hostname)
I cannot recall for how long this has been the way, but I thought I fixed it a couple of days ago and forgot to check my logs. Obviously I hadn't fixed it.
The issue revolves around host name lookup, which can be disabled via the FreeNAS interface for CIFS. Disabling this solves the issue described above but does not solve the original question: "Why haven't this appeared for as long as I've been running the share?". I have not changed my settings regarding DNS on my LAN but this issue first occurred only a couple of weeks ago.