Subject: kern/4508: PTMU discovery may have a bug
To: None <>
From: None <>
List: netbsd-bugs
Date: 11/16/1997 10:12:15
>Number:         4508
>Category:       kern
>Synopsis:       PTMU causes connection drops
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people (Kernel Bug People)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Nov 16 10:20:01 1997
>Originator:     William Coldwell
  William J. Coldwell             r               Warped Communications, Inc.
Executive Vice President   a    a  p     e    ?     1601 Civic Center Drive
Email:  I  m  W   e !  r  y u   Santa Clara, California 95050              d  A    o    408.248.WARP FAX:408.347.WARP
>Release:        <NetBSD-current source date> 11/13/97
System: NetBSD 1.3_ALPHA NetBSD 1.3_ALPHA (WARPED) #1: Thu Nov 13 09:30:11 PST 1997 i386

User with in-bound FTP over a dynamic-IP PPP link consistantly drops at a specific byte in a file (30660 bytes).  Turning PMTU off allows the user to download completely. 

Download multiple files from FTP.NETBSD.ORG while PMTU is on.