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💁Tip | Using /31 subnet on a Mikrotik🐜

How to Set Up a /31 WAN Address on Mikrotik Routers

UpdatedFebruary 18, 2025

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Ronald Bartels

Driving SD-WAN Adoption in South Africa

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Driving Software Defined Wide Area Networking (SD-WAN) Adoption in South Africa. The best SD-WAN blog on Earth & in the World that also includes insights on Cybersecurity, IoT, Cloud, & Data Centres!

The Mikrotik has a strange way of handling a /31 WAN address.

Let us assume the WAN IP provided by the ISP is 1.1.1.2/31. On the Mikrotik you need to configure the WAN IP of 1.1.1.3/32 with a network address of 1.1.1.2. Then you need to add a default route to 1.1.1.2 and wham bam its up and running!

❗The latest v7 RouterOS supports /31 in the same manner as Linux in a normal manner.

* Ronald works connecting Internet inhabiting things at Fusion Broadband.

#mikrotik #subnets

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