From nobody  Sat Apr 11 12:49:11 1998
Received: (from nobody@localhost)
          by hub.freebsd.org (8.8.8/8.8.8) id MAA26568;
          Sat, 11 Apr 1998 12:49:11 -0700 (PDT)
          (envelope-from nobody)
Message-Id: <199804111949.MAA26568@hub.freebsd.org>
Date: Sat, 11 Apr 1998 12:49:11 -0700 (PDT)
From: ehm@cris.com
To: freebsd-gnats-submit@freebsd.org
Subject: Can't connect to www.FreeBSD.org
X-Send-Pr-Version: www-1.0

>Number:         6276
>Category:       misc
>Synopsis:       Can't connect to www.FreeBSD.org
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          support
>Submitter-Id:   current-users
>Arrival-Date:   Sat Apr 11 12:50:01 PDT 1998
>Closed-Date:    Sun Apr 12 11:43:57 PDT 1998
>Last-Modified:  Sun Apr 12 11:45:02 PDT 1998
>Originator:     Erik H. Moe
>Release:        2.2.5
>Organization:
Blue Sky Computer Services, Inc.
>Environment:
FreeBSD okie.foo.bar 2.2.5-RELEASE FreeBSD 2.2.5-RELEASE #0: Fri Apr 10 20:51:00 CDT 1998     root@okie.foo.bar:/usr/src/sys/compile/OKIE  i386

>Description:
My home office has three systems: and Indy running IRIX 6.2, an
i586 running FreeBSD 2.2.5, and an i386 also running FreeBSD 2.2.5.
All three systems are connected via ethernet.  The i386 serves as
gateway to the internet using a 28.8K modem and the user PPP software
package configured for demand dialing.  Both the Indy and the i586
can route TCP/IP traffic through the gateway onto the Internet.
I have Netscape Communicator version 4.04 for the Indy and Netscape
Communicator version 4.05 for the i586.  Everything works fine on
both systems until I try to reach the URL "http://www.freebsd.org".
The Indy system has no problem reaching the FreeBSD web site.
However, when I try to reach the same site with the i586 running
FreeBSD 2.2.5, I get the following error from Netscape:

A network error occurred while Netscape was receiving data.
(Network Error: Connection reset by peer)

Try connecting again.

This is really strange because the Indy system less than a foot away,
using the same gateway has no problem connecting to the FreeBSD web
site.  The i586 has no problem reaching "http://www.yahoo.com",
"http://java.sun.com", or any other site (that I'm aware of).  It
just will not connect to "http://www.freebsd.org" (and that's no
good!).

I also tried using Mosaic 2.7b5 to access "http://www.freebsd.org".
I got a similar error message:

Requested document (URL http://www.freebsd.org/) could not be accessed.
The information server either is not accessible or is refusing to
serve the document to you.

The time this occured is around "Sat Apr 11 14:20:05 CDT 1998", if
you are interested in looking a log files.

>How-To-Repeat:

>Fix:
None.
>Release-Note:
>Audit-Trail:

From: Tim Vanderhoek <hoek@hwcn.org>
To: ehm@cris.com
Cc: freebsd-gnats-submit@FreeBSD.ORG
Subject: Re: misc/6276: Can't connect to www.FreeBSD.org
Date: Sat, 11 Apr 1998 19:47:28 -0400 (EDT)

 On Sat, 11 Apr 1998 ehm@cris.com wrote:
 
 > Communicator version 4.05 for the i586.  Everything works fine on
 > both systems until I try to reach the URL "http://www.freebsd.org".
 > The Indy system has no problem reaching the FreeBSD web site.
 > However, when I try to reach the same site with the i586 running
 > FreeBSD 2.2.5, I get the following error from Netscape:
 
 Are you really sure that it wasn't just some transient failure on
 the other end?  Maybe the netscape on the Indy was just reading
 the page from its cache?  Do you still get the same error from
 the i586?
 
 
 --
 Outnumbered?  Maybe.  Outspoken?  Never!
 tIM...HOEk
 

From: Erik Moe <ehm@cris.com>
To: freebsd-gnats-submit@freebsd.org, ehm@cris.com
Cc:  Subject: Re: misc/6276: Can't connect to www.FreeBSD.org
Date: Sun, 12 Apr 1998 13:19:39 -0500

 I have noticed that I have the same problem not only trying to connect
 to "www.freebsd.org", but also trying to connect to "www.apache.org".
 
 -- 
 Erik Moe
 ehm@cris.com

From: Marc Slemko <marcs@znep.com>
To: ehm@cris.com
Cc: freebsd-gnats-submit@FreeBSD.ORG
Subject: Re: misc/6276: Can't connect to www.FreeBSD.org
Date: Sun, 12 Apr 1998 12:36:41 -0600 (MDT)

 On Sat, 11 Apr 1998 ehm@cris.com wrote:
 
 > >Description:
 > My home office has three systems: and Indy running IRIX 6.2, an
 > i586 running FreeBSD 2.2.5, and an i386 also running FreeBSD 2.2.5.
 > All three systems are connected via ethernet.  The i386 serves as
 > gateway to the internet using a 28.8K modem and the user PPP software
 > package configured for demand dialing.  Both the Indy and the i586
 > can route TCP/IP traffic through the gateway onto the Internet.
 > I have Netscape Communicator version 4.04 for the Indy and Netscape
 > Communicator version 4.05 for the i586.  Everything works fine on
 > both systems until I try to reach the URL "http://www.freebsd.org".
 > The Indy system has no problem reaching the FreeBSD web site.
 > However, when I try to reach the same site with the i586 running
 > FreeBSD 2.2.5, I get the following error from Netscape:
 
 This is almost certainly due to a broken router or router config not
 sending ICMP can't fragment errors, since both www.apache.org and
 www.freebsd.org have path MTU discovery enabled.
 
 The probable reason why the Indy works is because it probably doesn't
 support PMTU-D so it advertises a MSS of something like 536 so the server
 doesn't try sending segments larger than that.
 
 Most likely, either ICMP is being filtered somewhere near you, or a router
 where there is a MTU change is using a private (RFC-1918) address which is
 getting filtered.
 
 See http://www.worldgate.com/~marcs/mtu/ for a description of PMTU-D and
 how it can be messed up.
 
 Without specifics about the addresses of the machines you are trying to
 connect to, I can't look to see where it appears the problem is, but this
 is the most likely explaination.
 
State-Changed-From-To: open->closed 
State-Changed-By: phk 
State-Changed-When: Sun Apr 12 11:43:57 PDT 1998 
State-Changed-Why:  
This is not a freebsd problem. 
>Unformatted:
