At this time I can't confirm the full support operation of Bonjour. I found a problem with v1.03 and v1.04 versions of FW for the 826L ad reported it to D-Link. Seems that wireless is not working correctly. At least for me. I'm not sure if the 826L version are in the same versions for the 636L or not. I presume that there is a possibility of them having the issues seen on the 826L as I presume they are designed on a similar platform in development, being that the 636 is the 2.4Ghz only model where the 826L is the 2.4 and 5ghz model. Other features being similar so I presume there is a slight chance of the issues seen on the 826L could also be seen on the 636L.
I have been working with D-Link to help in testing and information gathering. They haven't said anything about the 636L however there development team is aware of it and working on it.
The only think I can suggest is that you give the recent version a try. You can always down grade.
Please follow this if you decide to try it:
FW Update ProcessMake a Save Config to file of your current settings first. So if you upgrade and it doesn't work for you, you can downgrade then re-apply the saved configuration from file.
I don't know when or if the fixes will be forth coming. I do know that many things are going on at D-Link and they are working on getting back to the issue at hand for the 826L. I'll definitely try to find out if this effects all the L series routers or not and post information when I get it.
Keep us posted on what you decide to do and results.