[FS#309] Can't assign static IPv6 leases anymore

[LEDE Bugs]

For full information about what has changed in this task, visit the URL below and click the History tab.

FS#309 - Can't assign static IPv6 leases anymore
User who did this: Hans Dedecker (dedeckeh)
Percent Complete: 0% -> 100%

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=309