site-to-site ipsec and L2TP remote-access at the same time.

I got two EdgeRouter Lite with firmware v1.9.0 and I got an site-to-site ipsec tunnnel that works stable between them..

Now the need for l2tp remote-access ha come on one of the sites but when i add the l2tp configuration, the site-to-site tunnel will break in an couple of hours. I have tried to configure the site-to-site tunnel via cli or gui but it doesn't matter. Still breaks in a couple of hours.

Only way to get back up is to remove the site-to-site on one ERL and add it back again. clear vpn ipsec-peer xxx.xxx.xxx.xxx does not work. The command hangs.

From what I can see the tunnel hangs on connecting or rekeeying. 

Is it not supported to have both site-to-site and l2tp/ipsec at the same time?

I tried pptp togheter with the site-to-site tunnel and that is working rock solid but stupid IOS10 doesn't allow pptp passthrough when using the iphone as an wifi-hotspot.

Please advice..