Skip site navigation (1)Skip section navigation (2) 
Date:      Tue, 04 Jun 2002 11:17:48 -0700
From:      Lars Eggert <larse@ISI.EDU>
To:        Archie Cobbs <archie@dellroad.org>
Cc:        net@FreeBSD.ORG
Subject:   Re: netgraph documentation?
Message-ID:  <3CFD044C.3080300@isi.edu>
References:  <200206041713.g54HDHf51449@arch20m.dellroad.org>
next in thread | previous in thread | raw e-mail | index | archive | help 

[-- Attachment #1 --]
Archie Cobbs wrote:
> I don't think you can have a point-to-point interface who's
> remote IP address is also local to your box. In other words,
> this may not work on the same machine but it might work if
> you use two different machines... can you try that?

The addresses of the point-to-point interface aren't local to the box, 
the encapsulation ones are. I do this all the time with gifs and tuns, 
and it works fine.

Anyway, I tried it with two machines, and I see the same thing happening:

Ping packets originating on the client make it over the TCP tunnel, and 
the server sends something back (ICMP reply, I from the looks of it). 
However, the data gets dropped somewhere after the bpf dumps the packet.

Ping packets originating on the server never enter the tunnel, and I see 
"ping: sendto: Socket is not connected".

A UDP tunnel (like in your example) works fine between the same machines 
using the same addresses.

Please let me know if there's anything I can do to help track this down.

Lars
-- 
Lars Eggert <larse@isi.edu>           USC Information Sciences Institute

[-- Attachment #2 --]
0	*H
010	+0	*H
00G0
	*H
010	UZA10UWestern Cape10U	Cape Town10
U
Thawte10UCertificate Services1(0&UPersonal Freemail RSA 2000.8.300
010824164000Z
020824164000Z0T10
UEggert1
0U*Lars10ULars Eggert10	*H
	
larse@isi.edu00
	*H
0|\Pw v~~FDooӦA\-	 Cˀ4.)&{肋,z(ܷر߈T7_'txGH^tt/ҹB8%t<#ֲNV0T0*+e!000L2uMyffBNUbNJJcdZ2s0U0
larse@isi.edu0U00
	*H
aJPMՒ]cѭC+kS+wZ1gY",YT41
j6:~℩D~Kؚ‡l=u(ՎM?cF7@}T00G0
	*H
010	UZA10UWestern Cape10U	Cape Town10
U
Thawte10UCertificate Services1(0&UPersonal Freemail RSA 2000.8.300
010824164000Z
020824164000Z0T10
UEggert1
0U*Lars10ULars Eggert10	*H
	
larse@isi.edu00
	*H
0|\Pw v~~FDooӦA\-	 Cˀ4.)&{肋,z(ܷر߈T7_'txGH^tt/ҹB8%t<#ֲNV0T0*+e!000L2uMyffBNUbNJJcdZ2s0U0
larse@isi.edu0U00
	*H
aJPMՒ]cѭC+kS+wZ1gY",YT41
j6:~℩D~Kؚ‡l=u(ՎM?cF7@}T080fErtcvE.0
	*H
010	UZA10UWestern Cape10U	Cape Town10U
Thawte Consulting1(0&UCertification Services Division1$0"UThawte Personal Freemail CA1+0)	*H
	personal-freemail@thawte.com0
000830000000Z
040827235959Z010	UZA10UWestern Cape10U	Cape Town10
U
Thawte10UCertificate Services1(0&UPersonal Freemail RSA 2000.8.3000
	*H
032c	%E>nx'gڈD)c5*mp<ܮto034qmOe
KaU5u'rװ|CBPQ<9TIf-	kiN0L0)U"0 010UPrivateLabel1-2970U00U0
	*H
1KG]qSl]y=&b""I'{9$
*8PUl
LGlX1B	li+@]jy.%݊
Z<D&iHΥbb100010	UZA10UWestern Cape10U	Cape Town10
U
Thawte10UCertificate Services1(0&UPersonal Freemail RSA 2000.8.30G0	+a0	*H
	1	*H
0	*H
	1
020604181748Z0#	*H
	1~oGO@W.utz0R	*H
	1E0C0
*H
0*H
0
*H
@0+0
*H
(0*H
	1010	UZA10UWestern Cape10U	Cape Town10
U
Thawte10UCertificate Services1(0&UPersonal Freemail RSA 2000.8.30G0
	*H
_Y/=2x4(IZ
T>"0.	>;o5jրp=Uy=};ϓ$=s`.Sf
𛧩9wi }5>|=j!tZ
oPn

Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?3CFD044C.3080300>