my volumio is working and playing on a RPi2. It has wifi access (fixed ip in the same network range as alle the other devices) only (no lan cable). Unfortunately I cannot reach the RPi anymore via the webinterface nor ping the ip. I know it is working, because I am using a script to autostart the playback and as it is a webradio station I know it has internet access. I did not change anything on the RPi.
Here is my etc/network/interfaces
iface lo inet loopback
iface eth0 inet dhcp
iface wlan0 inet static
Any suggestions what I could test or what the reason for the behaviour could be?