First of all, here is my /etc/network/interfaces
auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 10.10.4.142 netmask 255.255.255.0 gateway 10.10.4.1 auto eth1 iface eth1 inet static address 10.10.4.138 netmask 255.255.255.0 gateway 10.10.4.1
At boot time, both eth1 and eth0 are reachable and usable.
I shut down my eth1 interface with
My ifconfig does not show my eth1 interface.
But, when i try to ping 10.10.4.138 (the ip address attached to my eth1), it pings!
I don't think that should be the normal behavior. If so, can you explain me why? Why can we ping an "ifdowned" interface?