I just configured the VPN on my Azure VM according to http://blogs.msdn.com/b/lighthouse/archive/2013/07/30/how-deploy-sstp-and-l2tp-vpn-in-windows-azure-windows-server-2012.aspx
And it was OK.
However, after I installed a few Windows Updates and changed my VM to Basic A0. The VPN cannot connect to internet.
I checked the Routing and Remote Access configuration panel, seems there is not external network interface:
So neither can I configure the NAT a external interface:
(sorry, can't post pictures since my account haven't been verified)
Any ideas?