I have setup IPsec remote VPN, some time, just some time, when clients didn't use 'Enable Transparent Tunneling', the clients could logon, passed user validation, got IPs, but could not access anything internal, failed to ping to any internal IPs. Checked firewall(ASA 5520) logs, it showed the client VPN IP sent packets to internal IPs correctly. But it just failed to access internal networks.
We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...