After upgrade to the new firmware the router sometimes failing with a connection

[Vilda]

RAX80 — Nighthawk AX8 8-Stream WiFi Router

I'm using firmware version V1.0.2.76_1.0.35 if I upgrade to the new firmware V1.0.3.98_1.0.46. Router not working like before. Everything on the Wifi is disconnected for every few moments, the network is not stable. Looks like very ugly BUG.
I even tried to reset the router and configure it from scratch, but there is the same issue.

Log:
There are some stupid logs about attacking, but it is misleading (those atack are from my provider or Apple service etc):

[DoS attack: ACK Scan] from source 17.57.146.20,port 5223 Tuesday, Aug 25,2020 19:08:38

[DoS attack: ACK Scan] from source 216.58.215.78,port 443 Tuesday, Aug 25,2020 19:08:33

[DoS attack: ACK Scan] from source 2.20.218.168,port 443 Tuesday, Aug 25,2020 19:08:32

[Admin login] from source 192.168.1.6, Tuesday, Aug 25,2020 19:08:31

[DHCP IP: (192.168.1.7)] to MAC address D0:2B:xx:xx:xx:xx, Tuesday, Aug 25,2020 19:08:28

[DoS attack: ACK Scan] from source 2.20.218.168,port 443 Tuesday, Aug 25,2020 19:08:25

[DoS attack: ACK Scan] from source 74.125.133.206,port 443 Tuesday, Aug 25,2020 19:08:23

[DoS attack: ACK Scan] from source 17.57.146.53,port 5223 Tuesday, Aug 25,2020 19:08:22

[DoS attack: ACK Scan] from source 88.221.224.173,port 443 Tuesday, Aug 25,2020 19:08:22

[DoS attack: ACK Scan] from source 92.122.29.216,port 443 Tuesday, Aug 25,2020 19:08:21

[DoS attack: ACK Scan] from source 2.20.218.168,port 443 Tuesday, Aug 25,2020 19:08:21

[DoS attack: ACK Scan] from source 88.221.224.173,port 443 Tuesday, Aug 25,2020 19:08:20

[DoS attack: ACK Scan] from source 2.20.218.168,port 443 Tuesday, Aug 25,2020 19:08:20

[DoS attack: ACK Scan] from source 92.122.29.216,port 443 Tuesday, Aug 25,2020 19:08:20

[DoS attack: ACK Scan] from source 2.20.218.168,port 443 Tuesday, Aug 25,2020 19:08:19

[DoS attack: Fraggle Attack] from source 93.190.61.97,port 5678 Tuesday, Aug 25,2020 19:08:18

[DoS attack: ACK Scan] from source 2.20.218.168,port 443 Tuesday, Aug 25,2020 19:08:18

[DoS attack: Fraggle Attack] from source 93.190.61.99,port 5678 Tuesday, Aug 25,2020 19:08:17

[DoS attack: ACK Scan] from source 17.57.146.20,port 5223 Tuesday, Aug 25,2020 19:08:15

[DHCP IP: (192.168.1.6)] to MAC address B8:E8:xx:xx:xx:xx, Tuesday, Aug 25,2020 19:08:15

[Internet connected] IP address: 93.190.61.109, Tuesday, Aug 25,2020 19:08:15

[DHCP IP: (192.168.1.5)] to MAC address E8:FB:xx:xx:xx:xx, Tuesday, Aug 25,2020 19:08:10

[Time synchronized with NTP server] Tuesday, Aug 25,2020 19:08:10

[DHCP IP: (192.168.1.4)] to MAC address 64:90:xx:xx:xx:xx, Tuesday, Aug 25,2020 19:08:09

[DHCP IP: (192.168.1.2)] to MAC address 98:D6:xx:xx:xx:xx, Tuesday, Aug 25,2020 19:08:09

[Initialized, firmware version: V1.0.3.98_1.0.46] Tuesday, Aug 25,2020 19:08:07

[schumaku]

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@Vilda wrote:

... Everything on the Wifi is disconnected for every few moments, the network is not stable. ...
...
There are some stupid logs about attacking, but it is misleading (those atack are from my provider or Apple service etc):

[DoS attack: ACK Scan]
...

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Can't speak for the RAX80 connectivity issue. However, this is a nice proof that many "DoS attack" detection and log entries are false positives - caused by connectivity issues, e.g. short disconnect/reconnect, roaming to/from other non-mesh wireless access points or the mobile network, ...

[bandit00013]

Second this. Post-upgrade to .98 I've had to reboot the router multiple times as it stops responding and providing internet access to devices. It also intermittently will not allow me to log into it even though it is serving data to devices.  May roll back to the previous framework.

[scaredpoet]

I'm gonna chime in and say that I've also had issues with the altest firmware for this router, and that manually downgrading it back tot he previous firmware (and turning off auto-updates) has made it stable again.

In my case, IPv6 kept dropping out on the router, requiring that I either reboot the router every coule of hours, or turn of IPv6 support completely. When I downloaded and installed V1.0.3.88_1.0.41 manually, things stablizized and IPv6 worked wiothout any problems again.

Hopefully they fix this in a newer firmware.  But I wuold definitely avoud 1.0.3.98_1.0.46, and if you have it installed, downgrade if you can.