Oh sorry, no there isn't the pppoe package but
...just attach it to your modem as a normal lan device (create a new interface with the static IP, etc...) and not a router, and install-download the packages you need!
(here in italy you can find it on Amazon for 70/80€, try to check on Amazon.it)
What is an official build?
Actually Italy is among the highest for Europe on Amazon, then (for the Netherlands) bol.com is better, just below € 100. In December they were selling them there new for € 43!
BTW, I have an uptime of 35 days on r21375 now, and it has pushed no less than 600GB external traffic, without any issues whatsoever.
Can someone provide a Factory image with ppoe packages. Saves me a lot of time. I have no connection at the moment. Thanks in advance!
Whoa, that’s true! 160€ 
I paid it 100€ new about 7/10 days ago, and I got a the alert just Tuesday that it was at 74€ refurbished.
Anyway I think that about 100€ is the correct price for the performance of it.
So you still have the ugly orange power LED… 
ahah anyway yes it’s stable and reliable.
Did get internet working from the modem! However ppoe packages wont install. Kernel 5.15.86 is installed, 5.15.90 is needed. Need a newer image with a newer kernel...
You can try these, I added ppp and pppoe (kmods are present as well):
I built factory and upgrades; make sure you don't grab the images with 2500x in the name unless you plan to use 2.5GB wan.
I also have r21929 builds up, however the factory.img was rejected by the netgear factory 1.0.4 firmware version:
https://github.com/jasonhensler/openwrt/releases/tag/snapshot-r21929-f07367176f.
Same applies here, 2500x named images will only work on a 2.5GB wan port.
These were minimally tested, I flashed them and that's all. I am not yet using this router as a primary as I want to get a stable 2.5GB build.
Post when/if you need 2.5GbE testers, I got 2.5 (and 10GbE) in my LAN.
At the moment, I'm only using the changes @patient0 had added to the dts previously to make the wan run at 2500x. It does link just fine at 2.5G for me but, I have not run much traffic or testing through it. I did some initial testing/playing with iperf3 (appeared single thread) maxed out the cpu on the wax206 before it reach the max 2.5G. I need to test my laptop on wifi6 with 160mhz channel and see what I can really push through it and multiple 1gb client devices with iperf.
The issues with the DTS changes are that the wan cannot link at 1GB, which would prevent a general image from being built. More specifically, it will appear to link at 1gb speed (ethtool, ip link, etc), however you will not be able to get any packets out. Reading through this thread and another thread link earlier for another device with the same cpu/phy, I understood the issue as having to do with the cpu/phy/physical layer link mismatching/not agreeing on the speed. I was trying to play with some of the patches for hisgmii mode (pending patches 721-730) as I thought this might help, but I've been having trouble with quilt and after the latest kernel jump they do not apply cleanly.
Just some images following the posts before 
They are both 1G
https://halloserv.de/openwrt/openwrt-mediatek-mt7622-netgear_wax206-squashfs-sysupgrade.bin
https://halloserv.de/openwrt/openwrt-mediatek-mt7622-netgear_wax206-squashfs-factory.img
Thank you for making that possible.
Do they have ppoe packages?
Did You read the reply to You from omeg - he's put on what You are asking for
When you use several SSIDs you'll need to add sleep 10 in _wireless_set_up() in /lib/netifd/netifd-wireless.sh after _wdev_notify_init $CMD_UP
No, but try the images mentioned in Finn's post.
Did a lot of testing last week to get my KPN internet-only glasfiber connection (netherlands) working with the image from @omeg . hoewever it wont work. Looks like something is wrong with the image. Even a simple tuturial from https://www.geheid.nl/openwrt-met-freedom-internet-via-kpn-glasvezel/ wont work. My asus router was working fine with similiar settings. I think i will return mine. Sadly, i really like to learn more from openwrt and networking. Sorry for my bad english.
merged.
So you're bashing an openwrt image, provided for free, running on a currently unsupported device ?
Nice of You to edit Your initial posting 
The tutorial you linked is using old style of configuring vlans, not necessarily suitable for these razor edge builts. Take a look here for some insight of new style of vlan configurations. Mini tutorial for DSA network config - Installing and Using OpenWrt / Network and Wireless Configuration - OpenWrt Forum
This might not be the case, just seen quite a many similar cases. Hope this helps.
@mattimat
Did you mean me in my thread hier? LAN-bridge configuration like AVM in OpenWrt
Because your answer fits my topic and I think it helps me a lot, thank you.
Did you use this image when you did the factory flash: https://github.com/jasonhensler/openwrt/releases/download/snapshot-r21757%2B2-895f38ca1e/openwrt-mediatek-mt7622-netgear_wax206-squashfs-factory.img
That would be the correct image to use for 1Gb wan port with ppp. If yes and still it is not working, the blog you linked mentions your service providers forums had openwrt info there: https://community.freedom.nl/, might be able to help. Seems your wan needs to be tagging traffic on vlan 6 and the mtu changed to 1508, however the page here seems to say the mtu should be 1448 (https://helpdesk.freedom.nl/category-detail/algemene-instellingen-eigen-modem)
Cheers.
