[Problem] Change the distribution logic flexibly.
[Solution] A control apparatus includes a communication unit (NIC20) configured to receive a packet from a network, a plurality of first control units (3a, 3b, 3c, 3d) configured to function as a plurality of virtual control units (VM1a, 1b, 1c, . . . ), a distribution circuit (Balancer 10a) configured to distribute the received packet to a plurality of dispatchers, a plurality of second control units (Dispatcher 4a, 4b, 4c, and 4d) configured to distribute the packet distributed by the distribution circuit to the plurality of virtual control units (VM1a, 1b, 1c, . . . ), in which the distribution circuit is configured by a PLD.