Setup Gateway on RB951 n2 Mikrotik

Hi everyone, I'm trying to migrate the gateway from linux to mikrotik. Given that on Linux the network traffic 44 takes place regularly, I am instead experiencing a great difficulty in configuring the rb 951 n2 following the directions of the wiki.ampr. There is someone on the list who has set up a rb mikrotik as described by the wiki and works regularly. I state that the ipip interface goes in regular running, the setups checked several times seem made for as requested. Someone can give me some info about it. Greetings Francesco IW8PGT