I have some problems. I believe it is related to duplicated IPv6 address allocated by DHCPv6 (LAN side).
So, here is the setting I used for the WAN/Internet section of my router.
And here is the setting on the LAN side of things
And here is the sequence of events:
boot up my ipad, turn wifi on, it got an address of 2403:9800:xxxx:xxxx:yyyy:yyyy:yyyy:1000
boot up laptop #1, plug in LAN cable, got an address of 2403:9800:xxxx:xxxx:yyyy:yyyy:yyyy:1001
boot up laptop #2, turn on wifi, got an address of 2403:9800:xxxx:xxxx:yyyy:yyyy:yyyy:1002
boot up PC, plug in LAN cabel, got an address of 2403:9800:xxxx:xxxx:yyyy:yyyy:yyyy:1003
turn off wifi on laptop #2 (currently with 2403:9800:xxxx:xxxx:yyyy:yyyy:yyyy:1002). then plug in a LAN cable, it got an address of 2403:9800:xxxx:xxxx:yyyy:yyyy:yyyy:1000!!! Man, this is the IPv6 address the ipad was having.
And now, ipad have no IPv6 connectivity.
Can anyone help? Thanks!