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     dhcp6relay - DHCPv6 relay agent


     dhcp6relay [-Ddf] [-b boundaddr] [-H hoplim] [-r relay-IF]
                [-s serveraddr] [-S script-file] [-p pid-file] interface ...


     dhcp6relay acts as an intermediary to deliver DHCPv6 messages between
     clients and servers, and is on the same link as a client.  dhcp6relay
     needs command line arguments interface ..., which specifies the list of
     links accommodating clients.

     Options supported by dhcp6relay are:

     -d      Print debugging messages.

     -D      Even more debugging information is printed.

     -f      Foreground mode (useful when debugging).  Although dhcp6relay
             usually prints warning, debugging, or error messages to
             syslog(8), it prints the messages to standard error if this
             option is specified.

     -b boundaddr
             Specifies the source address to relay packets to servers (or
             other agents).

     -H hoplim
             Specifies the hop limit of DHCPv6 Solicit messages forwarded to

     -r relay-IF
             Specifies the interface on which messages to servers are sent.
             When omitted, the same interface as interface will be used.  When
             multiple interface are specified, this option cannot be omitted.

     -s serveraddr
             Specifies the DHCPv6 server address to relay packets to.  If not
             specified, packets are relayed to ff05::1:3 (All DHCPv6 servers).

     -S script-file
             Specifies the script file to be executed when dhcp6relay receives
             a RELAY-REPLY message from a DHCPv6 server.  Further detail of
             the script file syntax is available in dhcp6c(8)

     -p pid-file
             Use pid-file to dump the process ID of dhcp6relay.


     /var/run/  is the default file that contains pid of the
                              currently running dhcp6relay.


     dhcp6c(8), dhcp6s(8)

     Ralph Droms, Editor, Dynamic Host Configuration Protocol for IPv6
     (DHCPv6), RFC 3315, 2003.


     The dhcp6relay command first appeared in WIDE/KAME IPv6 protocol stack