Manualy adding this nat rule solved my problem. Is it a normal behavior ? I mean having to manage nat routing for L2TP/SITE-TO-SITE VPN ?
rule 1 {
description "VPN L2TP/SITE2SITE NAT"
destination {
address 172.18.5.0/24
}
outbound-interface eth0
source {
address 172.18.10.0/24
}
translation {
address 172.18.4.1
}
}