[FS#1002] Dns ipv6 problem when interface restart

[LEDE Bugs]

The following task has a new comment added:

FS#1002 - Dns ipv6 problem when interface restart
User who did this - Ansuel (Ansuel)

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I can trigger the bug by console... but it's difficult to dump as tcpdump needs the interface up to actually dump packet...
When i disconnect adsl wan goes down too....

I managed to dump as soon as possible...

hope is usefull 
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