l2tp server and client on same box

hi, i’ve 3 mikrotik v.3.22 running in different locations. one is l2tp server, others are l2tp clients.
i decided to add an other tunnel,between 2 clients,say client A and B.

i got 2 new DSL lines for both mikrotiks, and added those lines without default route.
DSL lines have static ips, so i’ve added route rules for each mikrotik,now A and B can ping each others new DSL ip, using new DSL line.

so far,everything looks like working fine.

then ive added a l2tp server to one of the clients,and a corresponding l2tp client to other.
but it seems it does not connect.
here are the logs in the client A, that also have a l2tp server for B.

tried with pptp, it does not work either :frowning: