Dear SCO Customer,

Support Level Supplement (SLS) ptf7681a, the SCO UnixWare 7.1.1 
dlpi Driver Supplement, addresses this issue: 

-  My system hangs after receiving numerous empty ethernet packets
   from the network.


Contents
--------

        /etc/inst/nd/dlpi/Driver.o


Software Notes and Recommendations
----------------------------------

SLS ptf7681a should only be installed on:

        UnixWare 7 Release 7.1.1


Installation Instructions
-------------------------

1. Download the ptf7681a.Z file to the /tmp directory on your machine.

2. As root, uncompress the file and add the package to your system 
   using these commands:

        $ su
        Password: <type your root password>
        # uncompress /tmp/ptf7681a.Z
        # pkgadd -d /tmp/ptf7681a
        # rm /tmp/ptf7681a

Alternatively, this SLS package may be installed in quiet mode, 
that is, without displaying the release notes and asking for
installation confirmation.  To do this, use these commands:

        $ su
        Password: <type your root password>
        # uncompress /tmp/ptf7681a.Z
        # pkgadd -qd /tmp/ptf7681a all
        # rm /tmp/ptf7681a

3. Reboot the system after installing this package.

The release notes displayed prior to installation can be found in:

        /var/sadm/pkg/ptf7681/install/ptf7681.txt


Removal Instructions
--------------------

1. As root, remove the package using these commands:

        $ su
        Password: <type your root password>
        # pkgrm ptf7681

2. Reboot the system after removing this package.

If you have questions regarding this SLS, or the product on which 
it is installed, please contact your software supplier.