I am studying feasibility of IPV6 in Lebanon, and after some initial looks i noticed most of modems/routers present in Lebanon doesn't support ipv6, because ISPs and shops bring cheapest crap, and it is going to be a problem.
Calling to you, geeks, can you find in your modem any references to ipv6? What is your modem model?
We bought a new one 2 months ago from ogero(55k L.L) and it supports ipv6.
Tplink W8901N
TP-link VR900 - has IPv6
TD-W8961ND v4 - has IPv6

Edit: had the v2 but forgot I updated to the v4
Asus DSl ac68u I also used tunnelbroker HE and tested the ipv6 tunnel ( works also as proxy;)