First of all I read a lot of thread about problems with connections but all referred to a Wi-Fi LAN adapter. My problem is on the eth0 LAN port.
I have a Raspberry Pi 2 Model B with the latest stable Raspbian installed. I use it as a DHCP server so I configured a static IP. The problem is: after a reboot, the LAN port seems disabled. No ping, ssh or VNC work. But if I connect via real VNC over the cloud I can access the RPi and immediately after connected eth0 starts and i can ping or access ssh.
It seems the LAN port wakes up after an external input.
But after some minutes after disconnect from VNC again the LAN port goes to sleep.
This is my /etc/network/interfaces:
iface eth0 inet static address 192.168.3.91 netmask 255.255.255.0 broadcast 192.168.3.255 network 192.168.3.0 mtu 1500 gateway 192.168.3.1
And this is my /etc/dhcpcd.conf:
interface eth0 static ip_address=192.168.3.91 static routers=192.168.3.1 static domain_name_servers=220.127.116.11 18.104.22.168 static domain_search=
I tried with
- auto eth0
- inet manual (instead static)
- using a script executed on boot with sudo ifup eth0
but nothing worked...
On boot, the LAN port is not responding to pings.