l2tp/ipsec client at vps

[Vor-Metla]

Hi! First of all thanks for openmptcprouter, Yannick! Great product!
I've tried to setup ipsec/l2tp client at vps using https://github.com/jabas06/l2tp-ipsec-vpn-client to mikrotik router (as a l2tp server). The main goal of it is to connect to LAN behind mikrotik from LAN behind openmptcprouter at bonding speed.
So l2tp connection starts, there's ppp0 interface, but can't ping mikrotik interface.
root@VPS:~# ifconfig ppp0
ppp0: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1410
inet 192.168.67.4 netmask 255.255.255.255 destination 192.168.67.1
ppp txqueuelen 3 (Point-to-Point Protocol)
RX packets 4 bytes 58 (58.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 7 bytes 358 (358.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

root@VPS:~# ping 192.168.67.1
PING 192.168.67.1 (192.168.67.1) 56(84) bytes of data.
From 192.168.67.4 icmp_seq=1 Destination Host Unreachable
ping: sendmsg: Operation not permitted
From 192.168.67.4 icmp_seq=2 Destination Host Unreachable
ping: sendmsg: Operation not permitted
From 192.168.67.4 icmp_seq=3 Destination Host Unreachable

Without openmptcp using the same l2tp/ipsec setup at vps vpn works.
Any suggestions?