I just switched to Ahamo, and to my surprise, only ipv4 seems to work. I'm wondering if ahamo just doesn't support v6, or if something's weird with my line specifically.
If anyone on ahamo would be able to check from their mobile connection:
should let you know if it's supported or not. Also please let me know if you're on iOS or Android (I'm on Android in this case)
Big thanks.
by khfans