title: Sending packets from pcap with changed src/dst in scapy
body: <p>I am trying to send a previously recorded traffic (captured in pcap format) with scapy. Currently I am stuck at striping original Ether layer. The traffic was captured on another host and I basically need to change both IP and Ether layer src and dst. I managed to replace IP layer and recalculate checksums, but Ether layer gives me trouble.</p>
  
  <p>Anyone has experience resending packets from capture file with applied changes to IP and Ether layer(src and dst)? Also, the capture is rather big couple of Gb, how about scapy performance with such amounts of traffic?</p>