Archer C7 v2/5: Cannot setup mesh beside AP SSIDs with wpad-mesh

Ok, I've found a solution. (Took it from: https://forum.openwrt.org/t/tp-link-archer-c60-v2-19-07-0-rc2-ath79-snapshot-out-of-memory )

Archer C7 v2 / v5 - Connect via SSH and change firmware packages for the radio0 5 GHz interface:

  • opkg remove ath10k-firmware-qca988x-ct kmod-ath10k-ct
  • opkg update
  • opkg install ath10k-firmware-qca988x kmod-ath10k
  • rmmod ath10k_pci; sleep 1; modprobe ath10k_pci
  • -OR- reboot

I'm able to run multiple AP SSID's and a mesh SSID with WPA3-SAE encryption simultaneously with the non-ct firmware packages.

/etc/config/wireless:

config wifi-device 'radio0'
	option type 'mac80211'
	option channel '36'
	option hwmode '11a'
	option path 'pci0000:00/0000:00:00.0'
	option htmode 'VHT80'
	option txpower '20'
	option country 'DE'
	option legacy_rates '0'
	option noscan '1'

config wifi-device 'radio1'
	option type 'mac80211'
	option hwmode '11g'
	option path 'platform/ahb/ahb:apb/18100000.wmac'
	option channel '1'
	option htmode 'HT40'
	option country 'DE'
	option legacy_rates '0'
	option noscan '1'
	option txpower '20'

....

config wifi-iface 'wifinet9'
	option device 'radio0'
	option mode 'ap'
	option encryption 'none'
	option ssid 'WLANHST-GAST'
	option disassoc_low_ack '0'
	option network 'VL134'

config wifi-iface 'wifinet10'
	option network 'nwi_mesh0'
	option mesh_rssi_threshold '0'
	option key 'MYSECRETKEY'
	option encryption 'sae'
	option device 'radio0'
	option mode 'mesh'
	option mesh_fwding '0'
	option mesh_id 'test_mesh_ssid'

This requires /etc/config/network to have the interface "nwi_mesh0".