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IP6ADDRCTL(8)           FreeBSD System Manager's Manual          IP6ADDRCTL(8)

     ip6addrctl - configure address selection policy for IPv6 and IPv4

     ip6addrctl [show]
     ip6addrctl add prefix precedence label
     ip6addrctl delete prefix
     ip6addrctl flush
     ip6addrctl install configfile

     The ip6addrctl command manages the policy table of source and destination
     address selection for outgoing IPv4 and IPv6 packets.  When ip6addrctl is
     invoked without an argument or with a single argument show, it prints the
     content of the policy table currently installed in the kernel.

     To modify the table, the following operations are available:

     add prefix precedence label
             add a policy entry.  Prefix is an IPv6 prefix, which is a key for
             the entry.  An IPv4 prefix should be specified with an IPv6
             prefix using an IPv4-mapped IPv6 address.  Precedence and label
             are decimal numbers, which specify the precedence and label
             values for the entry, respectively.  This operation should be
             performed without an existing entry for the prefix.

     delete prefix
             delete a policy entry specified by prefix, which should be an
             IPv6 prefix.  A corresponding entry for the prefix should have
             already been installed.

     flush   delete all existing policy entries in the kernel.

     install configfile
             install policy entries from a configuration file named
             configfile.  The configuration file should contain a set of
             policy entries.  Each entry is specified in a single line which
             contains an IPv6 prefix, a decimal precedence value, and a
             decimal label value, separated with white space or tab
             characters.  In the configuration file, lines beginning with the
             pound-sign (#) are comments and are ignored.

     The program exits with 0 on success, non-zero on failures.

     Richard Draves, ``Default Address Selection for IPv6'', RFC 3484.

     The ip6addrctl command first appeared in the KAME IPv6 protocol stack
     kit.  The original command name was addrselect, but it was then renamed
     to the current one so that the name would describe its function well.

FreeBSD 11.0-PRERELEASE       September 25, 2001       FreeBSD 11.0-PRERELEASE


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