Have a 5515-x running 9.1(3) setup with L2TP/IPSec for remote end users.
I can connect fine using Windows and OSX. I have all traffic being ran through the L2TP connection and out the 5515, which is what we want (dont want split tunnel).
Both Windows and OSX can browse the LAN side of the 5515 no problem when connected to the VPN. DNS resolution works, RDP, Windows file share, etc. No problems there.
OSX is able to connect to the internet as well through the ASA, which is what we want.
The Windows clients cannot get online.
ASDM packet trace shows no issues with traffic passing from the L2TP DHCP subnet out the WAN interface of the ASA.
As a loss here. Can post a config if needed. Didn't want to do that right off the bat in case one you guys out there have ran into this before and happen to know the answer.