[FS#1247] BT Home Hub 5A fails to connect PPPOE over DSL

[LEDE Bugs]

The following task has a new comment added:

FS#1247 - BT Home Hub 5A fails to connect PPPOE over DSL 
User who did this - Hans Dedecker (dedeckeh)

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Can you add the output of ifstatus wan and the netifd traces (logread | grep netifd)

The ipv6 parameter must not be set to auto but rather to 1 in the config as a wan6 interface is explicitly created by uci config but this is not related to the reported issue
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=1247#comment4045