Sun Jan 4 16:30:17 2009 UTC ()
Drop trailing whitespace. Remove unneeded Pp before Ss.


(wiz)
diff -r1.40 -r1.41 src/share/man/man4/gre.4
cvs diff -r1.40 -r1.41 src/share/man/man4/gre.4 (expand / switch to unified diff)

--- src/share/man/man4/gre.4 2009/01/04 16:27:48 1.40
+++ src/share/man/man4/gre.4 2009/01/04 16:30:17 1.41
@@ -1,14 +1,14 @@ @@ -1,14 +1,14 @@
1.\" $NetBSD: gre.4,v 1.40 2009/01/04 16:27:48 hubertf Exp $ 1.\" $NetBSD: gre.4,v 1.41 2009/01/04 16:30:17 wiz Exp $
2.\" 2.\"
3.\" Copyright (c) 1998 The NetBSD Foundation, Inc. 3.\" Copyright (c) 1998 The NetBSD Foundation, Inc.
4.\" All rights reserved. 4.\" All rights reserved.
5.\" 5.\"
6.\" This code is derived from software contributed to The NetBSD Foundation 6.\" This code is derived from software contributed to The NetBSD Foundation
7.\" by Heiko W.Rupp <hwr@pilhuhn.de> 7.\" by Heiko W.Rupp <hwr@pilhuhn.de>
8.\" 8.\"
9.\" Redistribution and use in source and binary forms, with or without 9.\" Redistribution and use in source and binary forms, with or without
10.\" modification, are permitted provided that the following conditions 10.\" modification, are permitted provided that the following conditions
11.\" are met: 11.\" are met:
12.\" 1. Redistributions of source code must retain the above copyright 12.\" 1. Redistributions of source code must retain the above copyright
13.\" notice, this list of conditions and the following disclaimer. 13.\" notice, this list of conditions and the following disclaimer.
14.\" 2. Redistributions in binary form must reproduce the above copyright 14.\" 2. Redistributions in binary form must reproduce the above copyright
@@ -214,70 +214,68 @@ On Router A: @@ -214,70 +214,68 @@ On Router A:
214 # ifconfig greN create 214 # ifconfig greN create
215 # ifconfig greN 192.168.1.1 192.168.2.1 215 # ifconfig greN 192.168.1.1 192.168.2.1
216 # ifconfig greN tunnel A B 216 # ifconfig greN tunnel A B
217 # route add -net 192.168.2 -netmask 255.255.255.0 192.168.2.1 217 # route add -net 192.168.2 -netmask 255.255.255.0 192.168.2.1
218.Ed 218.Ed
219.Pp 219.Pp
220On Router B: 220On Router B:
221.Bd -literal 221.Bd -literal
222 # ifconfig greN create 222 # ifconfig greN create
223 # ifconfig greN 192.168.2.1 192.168.1.1 223 # ifconfig greN 192.168.2.1 192.168.1.1
224 # ifconfig greN tunnel B A 224 # ifconfig greN tunnel B A
225 # route add -net 192.168.1 -netmask 255.255.255.0 192.168.1.1 225 # route add -net 192.168.1 -netmask 255.255.255.0 192.168.1.1
226.Ed 226.Ed
227.Pp 
228.Ss Example 3: Encapsulating GRE in UDP 227.Ss Example 3: Encapsulating GRE in UDP
229To setup the same tunnel as above, but using GRE in UDP encapsulation 228To setup the same tunnel as above, but using GRE in UDP encapsulation
230instead of GRE encapsulation, set flags 229instead of GRE encapsulation, set flags
231.Ar link0 230.Ar link0
232and 231and
233.Ar link2 , 232.Ar link2 ,
234and specify source and destination UDP ports. 233and specify source and destination UDP ports.
235.Pp 234.Pp
236On Router A: 235On Router A:
237.Bd -literal 236.Bd -literal
238 # ifconfig greN create 237 # ifconfig greN create
239 # ifconfig greN link0 link2 238 # ifconfig greN link0 link2
240 # ifconfig greN 192.168.1.1 192.168.2.1 239 # ifconfig greN 192.168.1.1 192.168.2.1
241 # ifconfig greN tunnel A,port-A B,port-B 240 # ifconfig greN tunnel A,port-A B,port-B
242 # route add -net 192.168.2 -netmask 255.255.255.0 192.168.2.1 241 # route add -net 192.168.2 -netmask 255.255.255.0 192.168.2.1
243.Ed 242.Ed
244.Pp 243.Pp
245On Router B: 244On Router B:
246.Bd -literal 245.Bd -literal
247 # ifconfig greN create 246 # ifconfig greN create
248 # ifconfig greN link0 link2 247 # ifconfig greN link0 link2
249 # ifconfig greN 192.168.2.1 192.168.1.1 248 # ifconfig greN 192.168.2.1 192.168.1.1
250 # ifconfig greN tunnel B,port-B A,port-A 249 # ifconfig greN tunnel B,port-B A,port-A
251 # route add -net 192.168.1 -netmask 255.255.255.0 192.168.1.1 250 # route add -net 192.168.1 -netmask 255.255.255.0 192.168.1.1
252.Ed 251.Ed
253.Pp 
254.Ss Example 4: Realizing IPv6 connectivity 252.Ss Example 4: Realizing IPv6 connectivity
255Along these lines, you can use GRE tunnels to interconnect two IPv6 253Along these lines, you can use GRE tunnels to interconnect two IPv6
256networks over an IPv4 infrastructure, or to hook up to the IPv6 internet 254networks over an IPv4 infrastructure, or to hook up to the IPv6 internet
257via an IPv4 tunnel to a Cisco router. 255via an IPv4 tunnel to a Cisco router.
258.Bd -literal 256.Bd -literal
2592001:db8:1::/64 -- NetBSD A ---- Tunnel ---- Cisco B --- IPv6 Internet 2572001:db8:1::/64 -- NetBSD A ---- Tunnel ---- Cisco B --- IPv6 Internet
260 \\ / 258 \\ /
261 \\ / 259 \\ /
262 +------ the Internet ------+ 260 +------ the Internet ------+
263.Ed 261.Ed
264.Pp 262.Pp
265The example will use the following addressing: 263The example will use the following addressing:
266.Bl -hang 264.Bl -hang
267.It Nx A 265.It Nx A
268has the IPv4 address A and the IPv6 address 2001:db8:1::1 (connects 266has the IPv4 address A and the IPv6 address 2001:db8:1::1 (connects
269to internal network 2001:db8:1::/64). 267to internal network 2001:db8:1::/64).
270.It Cisco B  268.It Cisco B
271has external IPv4 address B. 269has external IPv4 address B.
272.It All the IPv6 internet world 270.It All the IPv6 internet world
273is behind B, so A wants to route 0::0/0 271is behind B, so A wants to route 0::0/0
274(the IPv6 default route) into the tunnel. 272(the IPv6 default route) into the tunnel.
275.It The GRE tunnel 273.It The GRE tunnel
276will use a transit network: 2001:db8:ffff::1/64 on 274will use a transit network: 2001:db8:ffff::1/64 on
277the 275the
278.Nx 276.Nx
279side, and ::2/64 on the Cisco side. 277side, and ::2/64 on the Cisco side.
280.El 278.El
281.Pp 279.Pp
282Then the following commands will configure the tunnel: 280Then the following commands will configure the tunnel:
283.Pp 281.Pp