In an increasingly IPv6 world, it would be useful if Mikrotik fully supported ipv6 subnet masks longer than /64. This generally requires the ability to disable subnet-router anycast, which does not seem to be the case in RouterOS (at least not in v5.x; I haven’t seen v6 yet, and I doubt it is there either).
I have encountered problems trying to do this.
The relevant RFC is 6164 (Using 127-Bit IPv6 Prefixes on Inter-Router Links - April 2011), which applies to inter-router PtP links, which I suspect many RouterOS customers need to do/implement (particularly for upstream/backbone links).
Given the vulnerabilities of using /64 for inter-router PtP links, this seems like it should receive some attention. I’m not convinced that using link-local addresses for PtP links is the way forward (it does seem to work if you need a [temporary?] work-around).
in RouterOS you use /128 addresses similar to /32 addresses in ipv4. That is, if you set up routing and all you want is to add mangement ipv6 address on the router or on the tunnel interface. Else LL address can be used.
Hello janisk
can you please explain (or post some link on regard) on how to use a /128 for p2p link? For me it’s simple with IPv4, but on IPv6 (where network field is missing) I can’t do it…
Maxstel - a /128 in ipv4 is the same as a /32 in ipv4 - it’s effectively a single host “subnet” - you can’t use it for a p2p network (but it works OK as a loopback IP for management purposes).
Unfortunately Janisk’s answer didn’t really help much.
You can assign /127 address and it works, however there is a problem if this address is used as gateway. Gateways from /127 addresses cannot be resolved.
