Packet fragment handling

A network device may include a packet header processing engine configured to receive a packet containing packet header information that includes a maximum transfer unit size and a packet length, and determine whether the packet length is greater than the maximum transfer unit size. The packet header processing engine may also be configured to generate and transmit new packet header information when the packet length is less than the maximum transfer unit size, and generate a first fragment header when the packet length is greater than the maximum transfer unit size. The packet header processing engine may further be configured to transmit the first fragment header for generation of a first packet fragment when the packet length is greater than the maximum transfer unit size.