help to config vpn l2tp

hi i need configurated 2vpn l2tp for 2 wan connection
the vpn it’s the same
DATE VPN
VPN1
user: test1
passwd: test1
conect to: 192.168.1.1

VPN2
user: test2
passwd: test2
conect to: 192.168.1.1

i need connect VPN1 for WAN1 and VPN2 form WAN2

This type of setup (connecting to the same remote VPN server via two WANs) is a pain, and with L2TP it is even more painful because IPsec comes into play. You cannot set up source port or address in /interface l2tp-client settings, and you cannot change the destination address and/or port of packets sent by your router itself by peaceful means.

The only reliable way is to set up connect-to of one of the /interface l2tp-client to an auxiliary IP address, and loop the traffic towards that address through your Tik one more time so that you could use dst-nat and policy routing based on in-interface and src-address combination. Do you feel brave (or desperate) enough to venture into such setup?