[FS#417] Not possible to create ip6tables rules for dynamic prefixes

[LEDE Bugs]

The following task has a new comment added:

FS#417 - Not possible to create ip6tables rules for dynamic prefixes
User who did this - Jo-Philipp Wich (jow-)

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Fixed in the LuCI master and lede-17.01 branches.
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=417#comment1371