Followed all steps, ipv6 network pingable from outside, i can log in via ssh from another linux machine trough ipv6 connectivity but i vcan`t login from windows/ mac ssh client as im getting no route to host. Please see below:
ip -6 route
::/96 dev sit0 metric 256
unreachable ::/96 dev lo metric 1024 error -113
unreachable ::ffff:0.0.0.0/96 dev lo metric 1024 error -113
2001:470:c:117d::/64 dev sit1 proto kernel metric 256
unreachable 2002:a00::/24 dev lo metric 1024 error -113
unreachable 2002:7f00::/24 dev lo metric 1024 error -113
unreachable 2002:a9fe::/32 dev lo metric 1024 error -113
unreachable 2002:ac10::/28 dev lo metric 1024 error -113
unreachable 2002:c0a8::/32 dev lo metric 1024 error -113
unreachable 2002:e000::/19 dev lo metric 1024 error -113
unreachable 3ffe:ffff::/32 dev lo metric 1024 error -113
fe80::/64 dev ens33 proto kernel metric 256
default dev sit1 metric 1
It sounds like your clients are configured incorrectly? Can they ping your VPS?
Sorted it out.
Thank You
It might be beneficial for others who have this same problem if you could post your solution.