add address=xxxx::/48 list=allowed ???

RouterOS General
1

Heya there folks,

Can someone kindly explain this to me: over at help.mikrotik.com → Building Your First Firewall , under IPv6 firewall; it says

add address=xxxx::/48 list=allowed

, but I keep getting

“failure: xxxx::/48 is not a valid dns name”

Regards,
Reev

2

Sure, xxxx is used as an example, you have to replace it with whatever you want to be in that list.
Regarding why xxxx is considered an invalid DNS name:
IPv6 is written as hex blocks, hex contains only 0-9 and a-f, x is outside of a-f so it means it must be a dns name, but it has no dot and it has trailing ::/48 which a dns name does not use, the error is from the latter, if you remove ::/48 it will try to resolve “xxxx” .
Don’t blindly follow guides without understanding them!

3

so, was the solution just to permit ::/48 ?

4

“x” != 0..9a..f