I have turned my raspberry pi B+ into an AP (Wifi Access Point).
A TL-WN725N (wlan0) uses hostapd, setup by
create_ap on archlinux arm (latest) to bridge the eth0 interface connected to the LAN via a switch connected to a PLC plug.
All is working fine. I usually have to ssh into the RPi to turn it off.
But today, I don't know why:
- I can't ssh or even see the RPi on the LAN. It's not that the ssh server is not running, it's simply that an arp scan does not show the RPi anymore (or using Fing on android)! even a ping to the normal IP gives 'No route to host'. The router does not see it either
- But devices connected on the AP can browse internet fine. And they do that by using eth0 somehow...
How is it possible that device connected to the AP can connect to internet while at the same time the eth0 interface is not visible from the LAN ?
I don't think it's the switch or the PLC plug. Other devices connected to the switch work as expected.