The pink and red envelopes are Spanning Tree and DTP packets that originate from the switch. The switch runs these protocols and will periodically send such packets out and thats what you are seeing. The brown packet is the original basic PDU you cre...
Using your text editor with root privileges, you can edit the
/opt/pt/packettracer
script, and change the script with the following text instead:
#!/bin/bash
echo Starting Packet Tracer 8.1.1
PTDIR=/opt/pt
export LD_LIBRARY_PATH=/opt/pt/bin
pu...
