PREFIX(8)

NAME
prefix - configure network interface prefixes

SYNOPSIS
prefix interface prefix [set | delete]

DESCRIPTION
The prefix utility is used to assign a prefix to a network interface. This command is currently just a frontend of ifconfig(8), and is not recommended to be used.

SEE ALSO
netstat(1), netintro(4), ifconfig(8), rc(8)

HISTORY
The prefix utility first appeared in WIDE/KAME IPv6 protocol stack kit. Previously, this command was used to manipulate prefixes separately from interface identifiers, intending to be used for prefix renumbering. However, it had been known that the manipulation mechanism was not friendly with traditional address management engine in the kernel. Thus, the KAME developers decided to invalidate the prefix manipulation mechanism, and to clarify the entire address/prefix manipulation in February 2001. Since then, this command has almost been obsoleted. All users should now use ifconfig(8).

IPv6 and IPsec support based on the KAME Project (http://www.kame.net/) stack was initially integrated into FreeBSD 4.0