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Man Pages


Manual Reference Pages  -  MCASTREAD (1)

NAME

mcastread - read multicast packets forever

CONTENTS

Synopsis
Description
Return Values
See Also
History

SYNOPSIS

mcastread [-v46] [-s source] interface address port [file]

DESCRIPTION

The mcastread utility reads UDP multicast data continuously, and writing the data to the standard output. You must specify the interface, multicast address and UDP port number or service name (services(5)). If you specify the file, mcastread will write the data to the file.

With -v , mcastread generates more messages.

With -4 and -6 , you can use either IPv4 or IPv6. By default, mcastread uses IPv6.

With -s source option, you can also specify the sender address of the multicast packet. If your kernel supports IGMPv3 / MLDv2, this source information is passed to the upstream multicast router.

RETURN VALUES

mcastread will exit with positive value on errors.

SEE ALSO

mcastsend(1)

HISTORY

The mcastread command first appeared in WIDE/KAME IPv6 protocol stack kit.
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