Capital Area Central Texas UNIX Society
CACTUS Newsletter

Volume 14, Number 1 - January 1998


January 15th CACTUS Meeting

CACTUS Meeting Location: Applied Research Labs

CACTUS meets on the third Thursday of each month at the Applied Research Labs (ARL) in the JJ Jake Pickle Research Campus (JJ PRC). We'll meet in the main auditorium located directly behind the guard's desk and main lobby.

Please do not show up earlier than 6:20 pm on the specified day. Enter through the main entrance at 10000 Burnet Road for ARL:UT. Tell the guard that you are here for the CACTUS meeting. You will be required to sign a log book, but not required to wear a badge. The guards will direct you to the auditorium entrance. Limited parking in the front of the building is available, but more extensive parking is available in the large parking lot just north of the ARL building. After 6:30 pm, all entrances to JJ PRC, except for the Burnet Road entrance, are closed and locked. You can still enter the parking lot in front of the ARL building. No parking tags are necessary after 6:00 pm. See map for further details.

Online maps are available at:

As always, please leave the facility as you saw it when you arrived. So let's clean up all pizza and soda items before we leave. Thanks and hope to see all of you there.

Location for the Monthly CACTUS Meeting
Applied Research Laboratory

                                                     | |     ^
           <---- to MOPAC                            | |     |
                                                     | |     | North
                                                     | |     | to Braker Lane
                                      ---------------+ |
                                      -+ /-----------+ |
                                       | |           | |
                                       | +--------+  | |
                                       |  Parking |  | |
                                       |    Lot   |  | |
                                       +----------+  | |
                                                     | |
                              +------------+         | |
                              |            | +-------+ |
                              |            | |   +---+ |
                              |            | |   |   | | Rutland
                              |    ARL     | |   |   | +---------
                              |            | |   |   | +---------
                              |            | |   +---+ |
                              |            | +---+---+ |
                              +------------+         | |  |
                                                     | |  | South
                                                     | |  | to US 183
                                                     | |  v

December Meeting Report

by Luis Basto

We had a surprising show of over 20 people for the normally slow December month. Tom Painter reminded that next month is elections for CACTUS officers. See below.

Jack McKinney gave a talk about IPv6. Although we are not quite running out of IP addresses yet, we will. Especially when every electronic component out there becomes addressable, such as light bulbs and personal robots.

IPv6 expands the current IP addressing scheme from 4 byte to 16 bytes. It is also based on classes but they have separate meanings such as geography, providers, etc.

One migration strategy Jack suggested involves upgrading DNS and then upgrade one machine at a time. This essentially focused all routing traffic to that node which will be used to route to outbound internet. Other machines can then be upgraded as needed until the whole LAN is IPv6. If all internal machine ares IPv6, they have to talk to external IPv4 through an IPv4 router.

Two modes are supported -- compatible and mapped. Compatible addresses look like ::C0A8:1811. Notice that the four bytes act like the a.b.c.d format. In the mapped mode, an IPv4 address will be subbed into:

xx xx xx C0A81811

This allows more efficient routing, among other benefits.

Currently, Cisco 11.2 IOS and Linux supports IPv6. More info can be obtained from Jack also recommended perusing IPng and the TCP/IP Protocols by Stephen A. Thomas, John Wiley & Sons.

Election of CACTUS Officers

Our charter requires that we elect new officers at the January meeting. We encourage every one to consider stepping up to a leadership role. Just ordering Pizza or Cokes seems to be a logistical nightmare for our group. The current officers are listed elsewhere in this newsletter.

Several of these positions -- scribe, treasurer, etc. are getting opened up and members are encouraged to run for them. Lindsay Haisley has expressed an interest to do membership.

Most importantly, show up at the January meeting to vote. Or you may become an elected officer.

O'Reilly Book Order Status

by Tom Painter

All books but the following have come in. If you have not picked up your books, please send email to bookorder [at] cactus <dot> org to arrange a time. Books that are not picked will be sold.

Contact me at bookorder [at] cactus <dot> org with questions.

Membership Report

by Luis Basto

We'd like to thank Don Kasselbaum, John Williams, Milan Patel, John Duncanson, David Mallis, Safaa Hashim, and Adil Soofi for renewing their membership.

We'd like to extend a warm welcome to the Kernel Group as our newest sponsor. The Kernel Group (TKG) provides top quality mission-critical computer network development and support services for the healthcare and financial services industries. They provide integration and management services for existing networks, custom application development, and maintenance outsourcing services. The Kernel Group was founded in 1990 with headquarters in Austin, Texas and maintains a branch office in New York, New York.

And another big thanks to Multi-Media Arts for continuing their sponsorship with CACTUS. Multi Media Arts (MMA) develops educational materials that address a range of ability levels and subject areas and are used for in-service training, classroom teaching, and independent study. MMA also provides consulting services for instructional program design, development, and implementation.

Take a look at the label on your newsletter if you received one. The membership expiration date is supposed to be printed there but lately it has been missing. Send email to membership [at] cactus <dot> org or newsletter [at] cactus <dot> org if you don't see a date on your label.


To renew your membership, please send check or money order payable to CACTUS ($25/yr for regular membership and $96/yr for corporate sponsorship):

PO BOX 9786
AUSTIN, TX 78766-9786

You can also pay in person at the general meetings. The date on the upper right hand of the newsletter mailing label indicates when your membership expires. Please direct any inquiries or address changes to membership [at] cactus <dot> org.

CACTUS Officers

Contact Information

CACTUS Sponsors