Abstract: In Internet Protocol version 6 (IPv6) over Low power Wireless Personal Area Networks (6LoWPAN), a distribution criterion for a prefix using a 6LoWPAN Context Option (6CO) can be set. The distribution criterion for the prefix using 6CO is set, and one of the prefix using the 6CO and a prefix using a Prefix Information Option (PIO) is distributed to another communication device based on the set distribution criterion.

Abstract: An apparatus and method is disclosed in which a frame format of a data frame received from a network conforming to a first communication scheme is converted into a frame format of a second network conforming to a different communication scheme, and the data frame is transferred according to a transfer rule applicable to the data frame of the frame format. A communication apparatus converts a frame format of a data frame received from a first network into a frame format conforming to a second communication scheme. Further, the communication apparatus performs transfer processing of the converted data frame according to a transfer rule that includes a pair of a transfer condition of the data frame and transfer processing, which is executed in a case where the transfer condition applicable to the data frame conforming to the second communication scheme, is satisfied.

Abstract: A communication apparatus has a first interface for connecting with a first network and a second interface for connecting with a second network. The communication apparatus detects that an address used in the first network is changed, and furthermore, when it detects that the address that is changed in the first network duplicates an address being used in the second network, disconnects a connection of a link layer with the second network, and after the disconnection, reconstructs the second network using an address which is not duplicated by the changed address.

Abstract: An apparatus and method is disclosed in which a frame format of a data frame received from a network conforming to a first communication scheme is converted into a frame format of a second network conforming to a different communication scheme, and the data frame is transferred according to a transfer rule applicable to the data frame of the frame format. A communication apparatus converts a frame format of a data frame received from a first network into a frame format conforming to a second communication scheme. Further, the communication apparatus performs transfer processing of the convened data frame according to a transfer rule that includes a pair of a transfer condition of the data frame and transfer processing, which is executed in a case where the transfer condition applicable to the data frame conforming to the second communication scheme, is satisfied.

Abstract: In Internet Protocol version 6 (IPv6) over Low power Wireless Personal Area Networks (6LoWPAN), a distribution criterion for a prefix using a 6LoWPAN Context Option (6CO) can be set. The distribution criterion for the prefix using 6CO is set, and one of the prefix using the 6CO and a prefix using a Prefix Information Option (PIO) is distributed to another communication device based on the set distribution criterion.

Abstract: A communication apparatus which includes a plurality of network interfaces stores the address of the communication apparatus in a network in association with one of the plurality of network interfaces, decides, 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, determines whether one or more first addresses associated with the decided network interface are stored, and performs control, if at least one of the first addresses is stored, so as to select the second address out of the first addresses based on a value at least used to set a communicable range, and transmit the signal to be transmitted by using the second address as a transmission source address.

Abstract: A communication apparatus has a first interface for connecting with a first network and a second interface for connecting with a second network. The communication apparatus detects that an address used in the first network is changed, and furthermore, when it detects that the address that is changed in the first network duplicates an address being used in the second network, disconnects a connection of a link layer with the second network, and after the disconnection, reconstructs the second network using an address which is not duplicated by the changed address.