IBG-3:-JSC-Supercomputer-HowTo.md

@@ -35,8 +35,7 @@ efficiently.
 
 4.  Add SSH Key to JuDoor:
      -   Instructions: https://gitlab.jsc.fz-juelich.de/sdlts/general-organisation/jsc-supercomputer-wiki-for-ibg-3/-/wikis/SSH-Keys-at-JSC-Supercomputers#uploading-the-public-key-pair-to-judoor
-     -   Use IP-Adresses of the form `x.y.0.0/16` in the "from" clause, where the first
-         two numbers "x" and "y" should be copied from the ip-adress displayed in the top
+     -   Use IP-Adresses of the form `x.y.0.0/16` (IPv4) or `x:y:z::/48` (IPv6) in the "from" clause, where the numbers "x", "y" and, for IPv6, "z" can be copied from the users's ip-adress displayed in the top
          of the JuDoor SSH-key-upload-page. Background: The last two numbers of the
          ip-adress may vary between logins and the suffix `0.0/16` ensures that the from-clause stays valid for these variations.