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rearpwhohas(9r)

NAME

rearpwhohas - Network: Broadcasts an ARP packet

SYNOPSIS

void rearpwhohas( struct arpcom *ac );

ARGUMENTS

ac Specifies a pointer to an arpcom data structure. This data structure defines information that is shared between the network layer and the device driver.

DESCRIPTION

The rearpwhohas() routine broadcasts an ARP packet to all hosts that currently have the driver's associated IP address in their ARP tables. The broadcast is made only if the IP address is configured. The system marks the IP address as configured by setting the ac_flag member of the associated arpcom data structure to the bit value AC_IPUP. The rearpwhohas() routine obtains the configured IP address from the ac_bcastaddr member of the arpcom data structure.

NOTES

You use the rearpwhohas() routine only when a LAN driver changes its physical address. Make sure that this interface is called without any locks held.

RETURN VALUES

None

SEE ALSO

Data Structures: arpcom(9s)

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