How to fetch ipv6 url?

ROS 6.30rc22
I need open url for update my ipv6 address at nsupdate.info. Fetch fork fine for ipv4 url, but failed for ipv6.
How to fetch ipv6 url?

IPv4

[admin@MikroTik] > /tool fetch mode=https keep-result=no url="https://xxx:xxx@ipv4.nsupdate.info/nic/update" 
  status: finished

IPv6

[admin@MikroTik] > /tool fetch url="https://xxx:xxx@ipv6.nsupdate.info/nic/update"                                                         
  status: failed

failure: closing connection: <connection failed> 0.0.0.0:443 (4)



[admin@MikroTik] > /tool fetch address=2a01:4f8:a0:2ffe:0:ff:fe00:8000 url="https://xxx:xxx@ipv6.nsupdate.info/nic/update" 
  status: failed
failure: closing connection: <connection failed> 0.0.0.0:443 (4)

Error confirmed – Ticket#2015063066000237

Hello,

thank you for insisting on the problem. This will be fixed in the next release.