title: Packets are greater than configured MTU
body: <p>I made a tcpdump and captured packets, the configured MTU is 2140. I am analysing pcap files using Wireshark. </p>
  
  <p>According to the configured MTU the expected maximum size of the packets should be 2154 (2140 bytes +14 ethernet header bytes). But I see packets of size greater than  2154 (ex 9010 bytes), On analyzing I found that these packets are generated on the machine where I made tcpdump (let's say A) and have the destination to another machine (let's say B). I expect a packet to be fragmented before it is sent to another host. I found some explanations online that says tcpdump captures packets before NIC breakdown, though this seems to be a valid explanation but it seems to contradict in my case because on machine A, I received packets of size greater than 2154 from B. Any thoughts, on why machine A is sending and receiving packets greater than configured MTU.</p>