My Pi3 running Jessie loses connectivity after unplugging and plugging back the ethernet cable. It's literally driving me crazy. Hope you could shed some light here.
Wifi is disabled in /boot/config and raspi-blacklist.
/etc/network/interfaces is as follows: # interfaces(5) file used by ifup(8) and ifdown(8) # Please note that this file is written to be used with dhcpcd # For static IP, consult /etc/dhcpcd.conf and 'man dhcpcd.conf' # Include files from /etc/network/interfaces.d: source-directory /etc/network/interfaces.d auto lo iface lo inet loopback auto eth0 allow-hotplug eth0 iface eth0 inet manual #allow-hotplug wlan0 #iface wlan0 inet dhcp # wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf #allow-hotplug wlan1 #iface wlan1 inet manual # wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf