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6to4_converter.py

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+ipv4Hex = ''
+ipv6Hextet1 = '2002'
+ipv6Hextet2 = ''
+ipv6Hextet3 = ''
+
+#take input
+print('Enter IPv4 address:')
+ipv4 = input()
+
+#split input to octets
+ipv4 = ipv4.split('.',4)
+
+#convert IPv4 address to hex string
+for octet in ipv4:
+	if len(hex(int(octet))[2:])>1:
+		ipv4Hex += hex(int(octet))[2:]
+	else:
+		ipv4Hex += '0'
+		ipv4Hex += hex(int(octet))[2:]
+
+#split into hextets
+for i in range(4):
+	ipv6Hextet2 += (ipv4Hex[i])
+for i in range(4,8):
+	ipv6Hextet3 += (ipv4Hex[i])
+
+#Convert to dec and back to remove leading zeros
+ipv6Hextet2 = hex(int(ipv6Hextet2,16))[2:]
+ipv6Hextet3 = hex(int(ipv6Hextet3,16))[2:]
+
+#form and print 6to4 address
+print(ipv6Hextet1+':'+ipv6Hextet2+':'+ipv6Hextet3+'::/128')