+-----------+ +------------+ +---------+
| LAN |eth0 lan0| Router |wan eth0| |
| PC |===========| |===========| WAN-PC |
| | | | eth1| |
+-----------+ +------------+ +---------+
192.168.0.4 192.168.0.123 1.2.3.123 1.2.3.4
I think above diagram will be helpful for understanding my setup.
Step 1 . pinging from LAN-PC to WAN PC ( from 192.168.0.4 to 1.2.3.4) ping will work fine..
Step 2. While ping is going on cable switching from eth0 to eth1 in WAN-PC [IMPORTANT: eth0 and eth1 is having same IP ( ie 1.2.3.4)]
In this case ping will resume (few packets will lose).
My Question is : What is the mechanism behind identifying MAC Address change ?