So, I was reading about the L2TP protocol and I understand what it basically does. But I fail to see why it would be preferred over pure IPSEC(VPN). VPN already provides end-to-end encryption between the gateway and my PC then why would I add more headers to the encapsulated packet and increase my bandwidth? Even if I am connecting one enterprise network located in two locations, can't we still do it via a pure VPN connection?
I think I am missing something very basic here. Can someone point it out! Thanks a lot.