[FS#650] 6in4 addresses are not advertised via DHCP.

[LEDE Bugs]

The following task has a new comment added:

FS#650 - 6in4 addresses are not advertised via DHCP.
User who did this - Arjen de Korte (arjendekorte)

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You have not specified a prefix length. The line

        option ip6prefix '2001:470:1f05:c3e::'

should be

        option ip6prefix '2001:470:1f05:c3e::/64'

assuming you have just the default /64 assigned to you.
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=650#comment2218