Sounds like Bounjour Sleep Proxy where the Apple TV will temporarily take over the IP(s) of other sleeping devices on the LAN so it can proxy those other IPs' services and then wake up the original device to service the request. See here for a discussion about that:
https://discussions.apple.com/thread/2160614?tstart=0 On Mon, Mar 17, 2014 at 02:06:07PM +0000, Sullivan, Don wrote: > I was wondering if anyone else has run into this before with Apple TVs. We > are still running Cisco 4400s as our controllers and are on 7.0.235.3. The > Apple TVs that are on the wireless network are getting this alarm: > Client 'xx:xx:xx:xx:xx:x (xx.xx.xx.xx)' which was associated with interface > '802.11a' of AP 'Haywood-BB-2' is excluded. The reason code is '3(Attempted > to use IP Address assigned to another device)'. > > We have checked and there are not any duplicate IPs. We have tried assigning > a static IP but it continues to get this alarm/event. I did a web search and > found something similar where it indicated disabling the exclusion policy "IP > Theft or Reuse" would be a work-around. I tried this and it did resolve the > issue, but I am not comfortable with this being disabled as I do not fully > understand at this point what this policy fully covers other than duplicate > IPs. I am curious if anyone else has seen this problem and what steps they > took to resolve it. > > Thanks, > > Don Sullivan > Network Adminstrator > Technology Services > > 205-726-2111<tel:205-726-2111> | office > 205-566-1432<tel:205-566-1432> | mobile > 205-726-2524 | fax > > [email protected]<mailto:[email protected]> > www.samford.edu<http://www.samford.edu> > 800 Lakeshore Drive, Birmingham, AL > 35229<http://maps.google.com/maps?q=800+Lakeshore+Drive,+Birmingham,+AL+35229,+US> > > [Samford University Logo] ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
