Patch Name:  PHNE_1578

Patch Description: System can panic when NFS doesn't deallocate routes.

This problem is related to route allocation.  When NFS sends a packet, it
allocates a route for that packet but didn't deallocate the routes that it
allocated.  This would cause the reference count (refcnt on the 'netstat -r'
output) to become negative.  In this case, routes can be deleted even though
they are still in use.  When these deleted routes are accessed, the system
can panic.

This problem will only occur when routes are deleted.  This happens with one
of four things:  manual route deletion, running gated, running a user program
which deletes routes, or when a route created by an ICMP re-direct is deleted
by arp.  arp only deletes these when it cannot contact the host routes
destination.

Path Name:  /hp-ux_patches/s700/8.X/PHNE_1578

Effective Date:  921006

Patch Files:  kudp_fsend.o

SR#: None.

"what" string/timestamp:  kudp_fsend.o:
         PATCH_8.07: $kudp_fsend.c- RTFREE $

"sum" output:  13252 10 kudp_fsend.o

Dependencies:  None.

Supersedes: None.

Patch Package Size:  31 Kbytes

Installation Instructions:  

     Please review all instructions and the Hewlett-Packard
     SupportLine User Guide or your Hewlett-Packard support terms
     and conditions for precautions, scope of license,
     restrictions, and, limitation of liability and warranties,
     before installing this patch.

     Note: Please back up your system before you patch.

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After getting the patch onto your machine, unshar the patch (sh PHNE_1578).

To install this patch do the following:
1) Run /etc/update (Note: you must be logged in as root to update
   a system).
2) Once in the update "Main Menu" move the highlighted line to "Change
   Source or Destination ->" and press "Return" or "Select Item".
3) Make sure the highlighted item in the "Change Source or Destination"
   window is "From Tape Device to Local System ...", then press "Return" or
   "Select Item".
4) You should now be in the "From Tape Device to Local System" window.
   Change the "Source:  /dev/rmt/0m" to "Source: /tmp/PHNE_1578.updt"
   (this assumes that you are in the /tmp directory where PHNE_1578.updt
   has been placed).  Note: You must enter the complete path name.
5) Press "Done".
6) From here on follow the standard directions for update.

The customized script that update runs will move the original software
to /system/PHNE_1578/orig.  HP recommends keeping this software there in
order to recover from any potential problems.  It is also recommended that
you move the PHNE_1578.text file to /system/PHNE_1578 to be retained for
future reference.

If you wish to put this patch on a magnetic tape and update from the tape
drive, dd a copy of the patch to the tape drive.  As an example the
following will create a copy of the patch that update can read:
dd if=PHNE_1578.updt of=/dev/rmt/0m bs=2048