Intermittent Network Crash

Did you use the web method and download that file from the users google drive to flash or the tftp method?

trx from google then sysupgrade with bin.

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You ARE on a stable router, my Flint2 is running w/o issues since 12/2023.
Starting with snapshot, now on 23.05.5, no problem ever.
You might try the vendor FW to rule out a SW issue.

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Yeah I thought I was on one. I figured I had done something horribly wrong. My next step was reset mt6000 and / or revert to oem. I did buy the tuf-4200 as well because I want this solved soon. All I want is a secure home lab environment.

I really wanted to avoid having to learn the stock oem ui too on the gl.

The Vendor GUI offers an "advanced interface" similar to the the one of OpenWRT.
(If I remember correctly, only had the vendor FW in use to verify the HW is OK)

Could you accept a possibility of deviant (not necessarily bad) batch?

For sure, shit happens ...

Like the hardware itself? Like requesting a RMA? I gotta go back to stock oem to even be able to compete with RMA.

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Like I proposed before.
Check if the issue persists with the Vendor FW, if so, request an RMA.

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RMA may yield you "new improved power supply" and "complementary stickers pack".

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So I have 34 days uptime on the mt6000! Whoo hoo. All I did was reset the router back to the bare sysupgrade-ed version of OpenWrt. I didn't go all the way back to OEM. Kind of weird. I guess in all my configuration and botching the configuration I messed something up.

EDIT 1:
In the past, I did try to mix tagged and untagged on the same port. So I would have one untagged and then a few tagged. For some reason, this seemed to break IPv6 and I could no longer get an IPv6 address. Maybe it was something weird with the firewall or ICMP.

It is hardware or driver limitation or a bug, in normal ethernet you can use 4095 vlans on top of normal lan. You are correct that you measured whether it works.

eg

This happened to me once. I had a VLAN also set on my WAN port and my device crashed.
MT-6000. ( I use IPv6 also )

Removed the VLAN - been stable ever since.

@systemcrash @mattcargile interesting, could you try ethtool -k/-K and try to disable vlan offloads to change code paths around supposed clans causing crashes?

I just removed the VLAN config. Did not actually need it. I may experiment with WAN VLAN at a later stage.