Sample of OIT Mobile Camper "reminder" mail:


Date: Sun, 29 Jul 2007 15:21:21 -0400 (EDT)
From: oit@princeton.edu (Office of Information Technology)
To: jsmith23@princeton.edu, bdoe45@princeton.edu
Subject: Mobile IP client sampledevice.Princeton.EDU may soon be changed in the Host Database

Sun Jul 29 15:21:21 2007

The following device has been using OIT Mobile IP Service on one network other
than its "home network" for some time, suggesting that it has been relocated
permanently (or for an extended period):

   Host Database name: sampledevice.Princeton.EDU
   Hardware address: 0:1:62:c3:4:35
   Home network: signet
   Network the device is visiting: musenet
   Time this visit began: Thu Jul 19 10:01:11 2007

OIT Mobile IP Service provides a temporary Internet address and hostname when a
device is attached to a network other than its "home network."  (A "home 
network" is the IP network specified in the device's entry in the Princeton 
University Host Database.)

The service is temporary, designed for short visits or truly "mobile" devices
that remain on no single network for long.

If a device continues to visit one network (other than its home) for more than
14 days, we assume it has been relocated permanently or for an extended
period.  At that time, Mobile IP Service is no longer appropriate for the
device; instead, its Host Database entry should be updated to reflect its new
"home network."  Doing so will cause the device to receive static IP service
(instead of Mobile IP Service) when attached to its new home network.

This reminder has been sent to you because the device above is approaching the
14-day limit.  (You are listed as a "Technical Contact" for this device in its
Host Database entry.)  We hope this reminder will help you to avoid any
unexpected interruption of network service.

If you plan to relocate the device to the "home network" indicated above (or
some other network) before the 14-day limit expires, you need take no action, as
we will then assume the device's appearance on the "visited network" listed 
above was temporary.

Otherwise, if you plan to keep using the device on the "visited network" 
identified above beyond the 14-day limit, you have two choices:

 Choice 1:

    Change the device's entry in the Host Database to reflect the new network
    to which it is attached.  The Host Database entry may be updated at:
         https://www.net.princeton.edu/hostmaster/

    The field to change is the IP-SUBNET-OR-ADDRESS-FIELD; that's the field
    that specifies the device's "home network."  Changing this field will
    cause the Host Database to discard the static IP address assigned for the
    device's use on its old home network, and to assign a new static IP address
    (appropriate for the new home network).  You will also probably wish to 
    update the BUILDING and ROOM fields (they do not indicate the device's 
    home network, but primarily serve as documentation and sometimes assist in 
    troubleshooting).

    When the Host Database change is processed (this can take up to a
    day, but often is completed within a few hours), you will receive email
    indicating that the change is being incorporated into the Host Database,
    and will be complete within about an hour.  After that time, reboot the
    device.  (You may see some disruption to the device's network service if 
    you don't reboot it.)  It will receive static IP service (assuming it is 
    attached to its new "home network").  It will still be able to use Mobile IP
    Service (when it travels to other networks).

 Choice 2:

    Take no action.  If the device continues to visit the network identified
    above for 14 days or more, OIT will send another message to you (assuming 
    you are still a Technical Contact for the device) indicating that we will 
    change the device's Host Database entry on your behalf.

    Within three business days of that message, we will change the Host Database
    entry.   Specifically, we will change the entry's IP-SUBNET-OR-ADDRESS field
    to match the visited network indicated above.  Changing this field will
    cause the Host Database to discard the static IP address assigned for the
    device's use on its old home network, and to assign a new static IP address
    (appropriate for the new home network).  At that time, we will send another 
    message to you (assuming you are still a Technical Contact for the device), 
    indicating that the change is being incorporated into the Host Database, and
    will be complete within about an hour.  After that time, reboot the device. 
    (You may see some disruption to the device's network service if you don't 
    reboot it.)  It will receive static IP service (assuming it is attached to 
    its new "home network").  It will still be able to use Mobile IP Service 
    (when it visits other networks).

    Note that choice 1 (above) provides you with greater control over the timing
    of the change, and therefore, over any disruption in service.

    The Host Database entry also contains BUILDING and ROOM fields indicating
    where the device is located.  (These values do not indicate the device's 
    "home network"; they serve primarily as documentation, and sometimes
    assist in troubleshooting.)  As we do not know in what building and room
    the device is presently located, our change will not update those fields
    in the Host Database entry.  You may wish to inspect the entry, and if
    necessary, update those fields. To do so, visit the Host Database at:
        https://www.net.princeton.edu/hostmaster/