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Diffstat (limited to 'share/man/man4/faith.4')
| -rw-r--r-- | share/man/man4/faith.4 | 75 |
1 files changed, 35 insertions, 40 deletions
diff --git a/share/man/man4/faith.4 b/share/man/man4/faith.4 index 4ecc609..c87563c 100644 --- a/share/man/man4/faith.4 +++ b/share/man/man4/faith.4 @@ -1,3 +1,5 @@ +.\" $KAME: faith.4,v 1.9 2001/04/27 17:26:35 itojun Exp $ +.\" .\" Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. .\" All rights reserved. .\" @@ -25,7 +27,6 @@ .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" -.\" $Id: faith.4,v 1.1.1.1 1999/08/08 23:30:37 itojun Exp $ .\" $FreeBSD$ .\" .Dd April 10, 1999 @@ -33,33 +34,31 @@ .Os .Sh NAME .Nm faith -.Nd -.Tn IPv6-to-IPv4 TCP -relay capturing interface +.Nd IPv6-to-IPv4 TCP relay capturing interface .Sh SYNOPSIS -.Cd "device faith 1" +.Cd "device faith" Op Ar count .Sh DESCRIPTION The .Nm -interface captures IPv6 TCP traffic -for implementing userland IPv6-to-IPv4 TCP relays +interface captures IPv6 TCP traffic, +for implementing userland IPv6-to-IPv4 TCP relay like .Xr faithd 8 . .Pp -Special action will be taken when IPv6 TCP traffic is seen on a router -and the routing table suggests to route it to the +Special action will be taken when IPv6 TCP traffic is seen on a router, +and routing table suggests to route it to .Nm interface. -In this case the packet will be accepted by the router, -regardless of the list of IPv6 interface addresses assigned to the router. -The packet will be captured by an IPv6 TCP socket if it has the +In this case, the packet will be accepted by the router, +regardless of list of IPv6 interface addresses assigned to the router. +The packet will be captured by an IPv6 TCP socket, if it has .Dv IN6P_FAITH flag turned on and it has matching address/port pairs. -As a result, +In result, .Nm -will let you divert IPv6 TCP traffic to some specific destination addresses. +will let you capture IPv6 TCP traffic to some specific destination addresses. Userland programs, such as -.Xr faithd 8 , +.Xr faithd 8 can use this behavior to relay IPv6 TCP traffic to IPv4 TCP traffic. The program can accept some specific IPv6 TCP traffic, perform .Xr getsockname 2 @@ -68,33 +67,29 @@ and perform application-specific address mapping to relay IPv6 TCP to IPv4 TCP. .Pp The .Dv IN6P_FAITH -flag on an IPv6 TCP socket can be set by using +flag on IPv6 TCP socket can be set by using .Xr setsockopt 2 , -with -.Fa level -set to +with level equals to .Dv IPPROTO_IPV6 -and -.Fa optname -set to +and optname equals to .Dv IPv6_FAITH . .Pp -To handle error reports by ICMPv6 some of the ICMPv6 packets routed to the +To handle error reports by ICMPv6, some of ICMPv6 packets routed to .Nm -interface will need be delivered to IPv6 TCP as well. +interface will be delivered to IPv6 TCP, as well. .Pp To understand how .Nm -can be used take a look at the source code of +can be used, take a look at source code of .Xr faithd 8 . .Pp -As the +As .Nm -interface implements potentially dangerous operations, -great care must be taken when configuring the +interface implements potentially dangerous operation, +great care must be taken when configuring .Nm interface. -To avoid possible misuse the +To avoid possible misuse, .Xr sysctl 8 variable .Li net.inet6.ip6.keepfaith @@ -103,13 +98,12 @@ must be set to prior to the use of the interface. When .Li net.inet6.ip6.keepfaith -is set to +is .Li 0 , -no packets will be captured by the +no packet will be captured by .Nm interface. .Pp -The .Nm interface is intended to be used on routers, not on hosts. .\" @@ -117,13 +111,14 @@ interface is intended to be used on routers, not on hosts. .Xr inet 4 , .Xr inet6 4 , .Xr faithd 8 -.\" .Rs -.\" .%A Jun-ichiro itojun Hagino -.\" .%A Kazu Yamamoto -.\" .%T ``FAITH'' IPv6-to-IPv4 TCP relay translator -.\" .%D July 1999 -.\" .Re -.\" +.Rs +.%A Jun-ichiro itojun Hagino +.%A Kazu Yamamoto +.%T "An IPv6-to-IPv4 transport relay translator" +.%R internet draft +.%N draft-ietf-ngtrans-tcpudp-relay-04.txt +.%O work in progress material +.Re .Sh HISTORY -The FAITH IPv6-to-IPv4 TCP relay translator first appeared in +The FAITH IPv6-to-IPv4 TCP relay translator was first appeared in WIDE hydrangea IPv6 stack. |
