I've got a strange issue as explained under:
There is one particular client type on my network (iPad) which will, after some time, loose network connectivity as well as its IPv6 address. The affected client usually loses connectivity after being on the network for a few days. Once connectivity is lost, nothing on the network can be pinged, either on IPv4 or IPv6. I don't know if the IPv6 address is just the first one to fall or not as the IPv4 address is sticky. Performing a DHCP lease renew does not bring the client back online, instead the client must be disconnected from the wireless network and re-connected before restoring connectivity.
I have a dual-stack LAN where the IPv6 addresses are provided to clients using an external router via RA. AP's are in FlexConnect mode with local switching but central authentication. The issue appears to re-occur every 3-5 days of the device being connected to the network. Since the device does not leave the premises, it will eventually fail. Either other devices do not appear to be affected (Macs and iPhones) or there is some timeout that is occurring at the time when the affected clients are in use. Next time it re-occurs I will attempt to find out how long, if at all, it would take for the client to have its connectivity restored.
I'm not sure why they would be losing connectivity and IPv6 addressing but not IPv4 addressing.
Pls help.
Thanks in advance
Omegle Espin Writer
