[FS#1501] DS-Lite is broken on snapshot with some models

[LEDE Bugs]

The following task has a new comment added:

FS#1501 - DS-Lite is broken on snapshot with some models
User who did this - Hans Dedecker (dedeckeh)

----------
The logs don't show any obvious issue as the wan6_4 dslite interface is coming up and the required IPv4/6 routes are in place.
There's no reason to disable masquerading as it should work even with masquerading in place.

To trouble shoot it further I would like to launch an IPv4 ping to 8.8.8.8 from a lan device.
While the ping is ongoing I would like to see the output of

  * ifconfig

  * ifstatus wan6_4

  * iptables -t filter -L -vn

  * iptables -t nat -L -vn

  * ip6tabes -t filter -L -vn
 
----------

More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=1501#comment4686