diff --git a/programming_and_scripting_for_cybersecurity/exploitation/basic_scapy_packet.py b/programming_and_scripting_for_cybersecurity/exploitation/basic_ipv4_scapy_packet.py
similarity index 52%
rename from programming_and_scripting_for_cybersecurity/exploitation/basic_scapy_packet.py
rename to programming_and_scripting_for_cybersecurity/exploitation/basic_ipv4_scapy_packet.py
index 768fb70..243444f 100644
--- a/programming_and_scripting_for_cybersecurity/exploitation/basic_scapy_packet.py
+++ b/programming_and_scripting_for_cybersecurity/exploitation/basic_ipv4_scapy_packet.py
@@ -5,3 +5,6 @@ packet = IP(src="10.1.1.2", dst="10.3.2.88")/TCP(dport=445)
 
 # send the packet
 send(packet)
+
+# You can also use sr() function for sending and receiving packet at the same time.
+# ans, unans = sr(packet, timeout=2)