Communication apparatus, control method, and computer readable storage medium

A communication apparatus comprising:

• a plurality of network interfaces;
• a storage unit configured to store an address of the communication apparatus in a network in association with one of the plurality of network interfaces;
• a determination unit configured to determine, if a signal is received, whether a destination address included in the signal is stored in the storage unit in association with a network interface used to receive the signal out of the plurality of network interfaces;
• and
• a control unit configured to perform control, if the destination address is not stored in the storage unit in association with the network interface used to receive the signal, so as to discard the received signal.

A control method for a communication apparatus which includes a plurality of network interfaces and a storage unit for storing an address of the communication apparatus in a network in association with one of the plurality of network interfaces, the method comprising:

• deciding, if there is a signal to be transmitted, a network interface to be used to transmit the signal out of the plurality of network interfaces;
• determining whether one or more first addresses associated with the decided network interface are stored in the storage unit;
• and
• performing control, if at least one of the first addresses is stored in the storage unit, so as to select a second address out of the first addresses based on a value used at least to set a communicable range, and transmit the signal to be transmitted by using the second address as a transmission source address.

A non-transitory computer readable storage medium for storing a program that causes, when executed by a computer included in a communication apparatus which includes a plurality of network interfaces and a storage unit for storing an address of the communication apparatus in a network in association with one of the plurality of network interfaces, the communication apparatus to:

• decide, if there is a signal to be transmitted, a network interface to be used to transmit the signal out of the plurality of network interfaces;
• determine whether one or more first addresses associated with the decided network interface are stored in the storage unit;
• and
• perform control, if at least one of the first addresses is stored in the storage unit, so as to select a second address out of the first addresses based on a value used at least to set a communicable range, and transmit the signal to be transmitted by using the second address as a transmission source address.