[FS#1393] netifd: "ubus call network reload" can't remove the deprecated ipv6 prefix delegation on lan

[LEDE Bugs]

The following task has a new comment added:

FS#1393 - netifd: "ubus call network reload" can't remove the deprecated ipv6 prefix delegation on lan
User who did this - Hans Dedecker (dedeckeh)

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The delegated IPv6 address is invalidated by netifd by setting the preferred and valid lifetime to 0 which can be checked by inspecting the output of ip -6 addr show.
The fact it's not removed is not really optimal but in any case the IPv6 address cannot be used anymore for IPv6 connectivity purposes
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=1393#comment4404