check ULA collisions with dn42 registry

[mweinelt]

No description provided.

[mart-ffbsee]

The mkdns script seem to have a problem when used with "-f unbound" and when there is a IPv6 nameserver notation in a icvpn-meta file like: fd10:127:ffff:53:: (so IPv6 Adress ending in :: which should be valid in my opinion). When I manually change this nameserver IP to fd10:127:ffff:53::0 before invoking mkdns, the problem does not happen.
This caused an unbound failure for me because the resulting unbound conf (forward zone) file had syntax errors.
It happened after the following commit in icvpn-meta:
freifunk/icvpn-meta@763c74e

[mweinelt]

Unrelated to this issue and fixed in freifunk/icvpn-meta@ae6bf8a.

[mart-ffbsee]

Unrelated to this issue and fixed in freifunk/icvpn-meta@ae6bf8a.
Oops, sorry, I meant to open a new issue. Thanx for fixing it anyways.