I get folks think @Larsa is overly pedantic about using scripts for adjusting routing rules… but the release thread highlight the non-theoritical side-effects of using script for stuff like WAN routing:
http://forum.mikrotik.com/t/v7-15beta-testing-is-released/174120/138
All my router use dhcp-client scripts & most router are remote… so I’m more sympathetic to the problem. I even know script really well! But I cannot control Mikrotik changing something in how scripting works…