Hi all
I would like to use an old device with OpenWRT 19 installed as a wireless extender/repeater.
I can Join to my router/modem wireless network in wireless tab but when I add the second wireless interface in order to link to my OpenWRT extender I have both the wireless interface as disabled.
Aside from this device being below minimum system requirements (16/32) and 19.07.x being EOL, this isn't exactly a great hardware for this purpose with single-band 802.11g and rather high power consumption (going into the unsupported ADSL modem and FXS features). That said, I'm not even sure if b43/ bcm4318 even supports multiple interfaces (iw list will tell you about the valid interface combinations).
Right, it can't run AP and STA combined or any other combination. I haven't heard of running mesh on Broadcom chips but it looks like you could try. An encrypted mesh (SAE) is probably not possible.