RouterOS v4.x and BGP

Just a quick heads up for those using upgrading from RouterOS 3.x to 4.x and using BGP to announce a default route to any of your peers; you need to set “default-originate” to “always” or “if-installed” for each peer you have configured in RouterOS if want to announce the default route to. This setting is off by default in v4.x so can cause havoc when you upgrade! 🙁