Most of the attacks on networks are launched through spoofed IP addresses i.e. Denial of Service attack. Attacker spoofs IP address of legitimate client, sends many useless packets to the victim and acts as a legitimate user. Since the attacks are launched through spoofed IP addresses therefore it is very difficult to identify the source of the attack (Attacker). The researchers introduce a technique to identify the origin of the spoofed user. This technique is known as the IP Traceback. Many traceback techniques are introduced but all have few drawbacks. Some increases the network load and delay, few requires implantation on all the routers of the world, few compromise on privacy of the user. Many techniques do not guarantee single packet IP traceback. All the existing IP traceback techniques require an efficient marking technique. A new single packet IP traceback technique to identify the source of the packet is introduced in this paper. This technique reduces the network delay and does not require any marking technique. Private information of the users will remain intact.