Dear SCO Customer,

Support Level Supplement (SLS) ptf7069h, the Networking inet Driver for 
UnixWare 7.0.1, addresses all of the problems listed below.


SLS ptf7069a addressed these issues:

1.  Traceroute(1Mtcp) fails to trace routing packets to a remote host.

2.  Turning the IP_MULTICAST_LOOP option off using setsockopt(3sock)
    does not disable multicast packets being looped back.

3.  A packet received with a different IP precedence value will cause
    the connection to be reset, without any error indication being sent
    to the user application.


SLS ptf7069b addressed these issues:

4.  A panic occurs in rtfree() on a system with more than 32768 routes
    through one gateway route.

5.  Under certain conditions, default routes cannot be deleted ("route 
    delete default" fails).  routed(1M) returns the wrong exit code and 
    sends errors to stdout.


SLS ptf7069d addressed these issues:

6.  Heavy activity on a web server (Netscape or Apache) can cause
    the server process to hang due to incorrect handling of
    incoming TCP connections.

7.  A streams leak in the tcp driver which could result in process 
    hangs.


SLS ptf7069e addressed this issue:

8.  Enhancement to provide gratuitous arp functionality (-i option)

                                  arp(1Mtcp)

   -i interface_name target_ipaddr

        Send an ARP request, avoiding the cache, on the specified
        interface interface_name (for example, net0). In the
        broadcast request, the sender's IP address is that of the
        interface, the sender's hardware address (MAC address) is
        that of the interface, and the target IP address is that
        specified by target_ipaddr.

        On interfaces with aliased IP addresses (see ifconfig(1Mtcp)), 
        a separate ARP request is broadcast for each alias address 
        with the sender's IP address set to the alias address.  As 
        generally used, the sender expects the host with the target 
        IP address to respond with an ARP reply containing its hardware 
        address.

        If the sender and target IP addresses are identical, a
        gratuitous ARP request is broadcast. This allows other
        hosts on the network to update their cache entries for the
        sender's IP address with the hardware address contained
        in the request. No reply is expected. If an interface has
        been configured with several alias IP addresses, a separate
        gratuitous ARP request must be issued for each IP address
        which needs to notify its corresponding hardware address to
        the network.


SLS ptf7069f addressed these issues:

9.  A PANIC in function in_memcmp() called by rt_output() in router.

10. The following warning messages were logged on importing the internet 
    bgp routing table via gated:

        WARNING: rn_delete couldn't find out annotation
        WARNING: rn_delete Orphaned Mask

11. System panic when pinging multicast address 224.0.0.X due to ip_output()
    failing to check for null value of imo.


SLS ptf7069g addressed these issues:

12. Applications that use t_optmgmt() can cause PANIC.

13. Opens/closes of /dev/arp in a loop will eventually fail with ENXIO. 
    Subsequently, all opens of /dev/arp will fail with ENXIO (for example 
    'arp -S').


SLS ptf7069h additionally addresses this issue: 

14. System hangs and the osmlog displays the message:

    NOTICE: Kernel virtual memory for buffer I/O temporarily exhausted;
            using reserved pool to allow paging to proceed.


Contents
--------

       /etc/conf/pack.d/inet/Driver_atup.o
       /etc/conf/pack.d/inet/Driver_mp.o
       /usr/sbin/arp


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

SLS ptf7069h should only be installed on:

       UnixWare 7 Release 7.0.1


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

1. Download the ptf7069h.Z file to the /tmp directory on your machine.

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

        $ su
        Password: <type your root password>
        # uncompress /tmp/ptf7069h.Z
        # pkgadd -d /tmp/ptf7069h
        # rm /tmp/ptf7069h

3. Shut down and reboot the system after installing this SLS package.

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

        /var/sadm/pkg/ptf7069/install/ptf7069.txt


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

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

        $ su
        Password: <type your root password>
        # pkgrm ptf7069

2. Reboot the system after removing this SLS package.


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