Hello dear community,

I have switched my wifi to an OC-300 (firmware V1_1.7.1_20220112, Omada SDN Controller v5.0.30) with 4 EAP660-HD (firmware EAP660HD(EU)_V1_1.1.0 build 20211027) and discovered the following problem while investigating the network:

My network has IPv6 set up via RA and SLAAC. The clients that are connected via WLAN also get an IPv6 subnet. But when I try to ping it runs over IPv4. DNS over IPv6. Only when I reconnect the client via the Omada controller or I change the access points, then the DNS and ping over IPv6 works for about 1 minute, then suddenly no longer.

I attach a few pictures to this.

Ping before first reconnect:

Ping direct after first reconnect:

Ping approximatly 1 minute after first reconnect:

Ping after second reconnect:

Greetings
Steve