> On 23 May 2016, at 14:29, Jen Linkova <furry13@gmail.com> wrote: 
> 
> furry@Wintermute:~>dig dragon.eecs.jacobs-university.de aaaa +short 
> 2001:638:709:3000::3a 
> furry@Wintermute:~>telnet -6 dragon.eecs.jacobs-university.de 5000 
> Trying 2001:638:709:3000::3a... 
> telnet: connect to address 2001:638:709:3000::3a: Connection refused 
> telnet: Unable to connect to remote host 
> 
> That host does have IPv6 address in DNS (so no NAT64 is involved) but 
> nothing is listening on tcp/5000 on that IPv6 address. 

Fixed. Now it’s listening on both v4 and v6.