title: merging tcpdump from two different interfaces
body: <p>Can you please help me to get an idea, how to do the following requirement?</p>
  
  <p>I have two ethernet ports on a server. Eth0 and Eth1. Both interfaces are carrying traffic. I want to capture packet-dump both of the interfaces and merge into one file.</p>
  
  <p>Thank you
  Luke</p>