Fragmented IP traffic is not accelerated by Onload on the receive side, and is instead received transparently via the kernel stack. IP fragmentation is rarely seen with TCP, because the TCP/IP stacks segment messages into IP datagrams that do not exceed the MTU size. With UDP, datagrams are fragmented by IP if they are too large for the configured MTU. Refer to Fragmented UDP for a description of Onload behavior.