Thanks… but because I changed setting a long time ago, I do not remember if I changes this setting or not from default. What is the default setting? on or off?
Also, does IPv6 works only on LAN connection (Ethernet) or also the WiFi?
To be honest I don't know what the default setting is, are you experiencing any particular problem with your service?
If you're concerned about the settings then you could reset your router to factory default