Hello Peter, thanks very, very much. This indeed helps a great deal! I have not been able to actually comprehend the "Mask prefix bits" description. But it works brilliantly - and now it makes sense, thinking about it. Excellent toll! Ede Am 24.07.24 um 15:36 schrieb pb@bieringer.de:

Hi,

    ipv6calc -O ipv6 -h

would provide some hints...

In your case:

ipv6calc -q fd01:db8:ca45:137e:a2:b006::125/59 --maskprefix --no-prefixlength fd01:db8:ca45:1360::

Hope this helps,     Peter

Am 24.07.24 um 12:37 schrieb Ede Wolf:

...

Hello,

hoping, that I have not fully understand the documentation, I am wondering, wether ipv6calc is able to calculate the prefix (or net id) from a given IP Address. F.e. I input:

fd01:db8:ca45:137e:a2:b006::125/59

and the expected output would be:

fd01:db8:ca45:1360::

(unless I miscalculated, that is).

Again, I have not been able to find that, but maybe I have missed something in the filter section.

Thanks

Ede

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