Automatic Private IP Addressing (APIPA)

[Guest]

Every now and then, my IP address changes to a 169.254.x.x address and I lose
my internet connection. Nothing I've tried has allowed me to get rid of this
address (except for a re-install of 2k.)

Does anyone have any suggestions?

Is there some way to APIPA off?

Thanks

 

[Richard G. Harper]

APIPA is not your problem, it's a sign of your problem. Whenever your
computer cannot get an IP address assigned (or reassigned) by your DHCP
server you get the private IP address instead. This is entirely normal and
cannot be disabled. What you need to be looking for is the reason your
computer loses its connection to the network and substitutes a private IP
address instead. Any bad hardware, including cables, between you and your
DHCP server could cause this.

--
Richard G. Harper [MVP Shell/User] (e-mail address removed)
* NEW! Catch my blog ... http://msmvps.com/blogs/rgharper/
* PLEASE post all messages and replies in the newsgroups
* The Website - http://rgharper.mvps.org/
* HELP us help YOU ... http://www.dts-l.org/goodpost.htm

 

[3c273]

FYI, APIPA can be disabled. From KB220874:
For Windows 2000, Windows XP, and Windows Server 2003, APIPA can be
disabled by adding the "IPAutoconfigurationEnabled" DWORD registry entry
with a value of 0x0 to the following registry key:


HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters\Interf
aces\<Adapter GUID>

Louis

APIPA is not your problem, it's a sign of your problem. Whenever your
computer cannot get an IP address assigned (or reassigned) by your DHCP
server you get the private IP address instead. This is entirely normal and
cannot be disabled. What you need to be looking for is the reason your
computer loses its connection to the network and substitutes a private IP
address instead. Any bad hardware, including cables, between you and your
DHCP server could cause this.

--
Richard G. Harper [MVP Shell/User] (e-mail address removed)
* NEW! Catch my blog ... http://msmvps.com/blogs/rgharper/
* PLEASE post all messages and replies in the newsgroups
* The Website - http://rgharper.mvps.org/
* HELP us help YOU ... http://www.dts-l.org/goodpost.htm

Every now and then, my IP address changes to a 169.254.x.x address and I
lose
my internet connection. Nothing I've tried has allowed me to get rid of
this
address (except for a re-install of 2k.)

Does anyone have any suggestions?

Is there some way to APIPA off?

Thanks

 

[Guest]

Richard,

I understand what you mean by APIPA being a sign of the problem, however, I
was troubleshooting both from my end and on the phone with my ISP and
everything checked out fine. Before I lost connectivity, I noticed my
firewall detected a "new" network (169.254.x.x). Is it possible that my
firewall prevented me from getting out to the DHCP server? Or was my firewall
just telling me that I had been switched to the private network. Note: No
problems (yet) since my OS reinstall but I will triple check all of my
connections the next time this happens.

Did you notice the posting from 3c273? I had seen something in the knowledge
base about disabling APIPA but I don't like to mess with the registry.

I appreciate your guidance.

APIPA is not your problem, it's a sign of your problem. Whenever your
computer cannot get an IP address assigned (or reassigned) by your DHCP
server you get the private IP address instead. This is entirely normal and
cannot be disabled. What you need to be looking for is the reason your
computer loses its connection to the network and substitutes a private IP
address instead. Any bad hardware, including cables, between you and your
DHCP server could cause this.

--
Richard G. Harper [MVP Shell/User] (e-mail address removed)
* NEW! Catch my blog ... http://msmvps.com/blogs/rgharper/
* PLEASE post all messages and replies in the newsgroups
* The Website - http://rgharper.mvps.org/
* HELP us help YOU ... http://www.dts-l.org/goodpost.htm

Every now and then, my IP address changes to a 169.254.x.x address and I
lose
my internet connection. Nothing I've tried has allowed me to get rid of
this
address (except for a re-install of 2k.)

Does anyone have any suggestions?

Is there some way to APIPA off?

Thanks

 

[Richard G. Harper]

Disabling APIPA will only solve the symptom of the problem, not the problem
itself. Same with your firewall - it's noting the change due to loss of
connectivity, not causing the problem.

--
Richard G. Harper [MVP Shell/User] (e-mail address removed)
* NEW! Catch my blog ... http://msmvps.com/blogs/rgharper/
* PLEASE post all messages and replies in the newsgroups
* The Website - http://rgharper.mvps.org/
* HELP us help YOU ... http://www.dts-l.org/goodpost.htm

Richard,

I understand what you mean by APIPA being a sign of the problem, however,
I
was troubleshooting both from my end and on the phone with my ISP and
everything checked out fine. Before I lost connectivity, I noticed my
firewall detected a "new" network (169.254.x.x). Is it possible that my
firewall prevented me from getting out to the DHCP server? Or was my
firewall
just telling me that I had been switched to the private network. Note: No
problems (yet) since my OS reinstall but I will triple check all of my
connections the next time this happens.

Did you notice the posting from 3c273? I had seen something in the
knowledge
base about disabling APIPA but I don't like to mess with the registry.

I appreciate your guidance.

APIPA is not your problem, it's a sign of your problem. Whenever your
computer cannot get an IP address assigned (or reassigned) by your DHCP
server you get the private IP address instead. This is entirely normal
and
cannot be disabled. What you need to be looking for is the reason your
computer loses its connection to the network and substitutes a private IP
address instead. Any bad hardware, including cables, between you and
your
DHCP server could cause this.

--
Richard G. Harper [MVP Shell/User] (e-mail address removed)
* NEW! Catch my blog ... http://msmvps.com/blogs/rgharper/
* PLEASE post all messages and replies in the newsgroups
* The Website - http://rgharper.mvps.org/
* HELP us help YOU ... http://www.dts-l.org/goodpost.htm

Every now and then, my IP address changes to a 169.254.x.x address and
I
lose
my internet connection. Nothing I've tried has allowed me to get rid of
this
address (except for a re-install of 2k.)

Does anyone have any suggestions?

Is there some way to APIPA off?

Thanks

 

[Richard G. Harper]

Happy to be of assistance.

--
Richard G. Harper [MVP Shell/User] (e-mail address removed)
* NEW! Catch my blog ... http://msmvps.com/blogs/rgharper/
* PLEASE post all messages and replies in the newsgroups
* The Website - http://rgharper.mvps.org/
* HELP us help YOU ... http://www.dts-l.org/goodpost.htm

Thanks for the clarification. Note: I've downloaded ZoneAlarm to provide
some
firewall protection and was surprised to see the same interface as the one
from Computer Associates. I've since learned that CA's eZ Firewall is
based
on the code from ZoneAlarm.

Thanks again for your help!

Disabling APIPA will only solve the symptom of the problem, not the
problem
itself. Same with your firewall - it's noting the change due to loss of
connectivity, not causing the problem.

--
Richard G. Harper [MVP Shell/User] (e-mail address removed)
* NEW! Catch my blog ... http://msmvps.com/blogs/rgharper/
* PLEASE post all messages and replies in the newsgroups
* The Website - http://rgharper.mvps.org/
* HELP us help YOU ... http://www.dts-l.org/goodpost.htm

Richard,

I understand what you mean by APIPA being a sign of the problem,
however,
I
was troubleshooting both from my end and on the phone with my ISP and
everything checked out fine. Before I lost connectivity, I noticed my
firewall detected a "new" network (169.254.x.x). Is it possible that my
firewall prevented me from getting out to the DHCP server? Or was my
firewall
just telling me that I had been switched to the private network. Note:
No
problems (yet) since my OS reinstall but I will triple check all of my
connections the next time this happens.

Did you notice the posting from 3c273? I had seen something in the
knowledge
base about disabling APIPA but I don't like to mess with the registry.

I appreciate your guidance.

:

APIPA is not your problem, it's a sign of your problem. Whenever your
computer cannot get an IP address assigned (or reassigned) by your
DHCP
server you get the private IP address instead. This is entirely
normal
and
cannot be disabled. What you need to be looking for is the reason
your
computer loses its connection to the network and substitutes a private
IP
address instead. Any bad hardware, including cables, between you and
your
DHCP server could cause this.

--
Richard G. Harper [MVP Shell/User] (e-mail address removed)
* NEW! Catch my blog ... http://msmvps.com/blogs/rgharper/
* PLEASE post all messages and replies in the newsgroups
* The Website - http://rgharper.mvps.org/
* HELP us help YOU ... http://www.dts-l.org/goodpost.htm


Every now and then, my IP address changes to a 169.254.x.x address
and
I
lose
my internet connection. Nothing I've tried has allowed me to get rid
of
this
address (except for a re-install of 2k.)

Does anyone have any suggestions?

Is there some way to APIPA off?

Thanks

 

[Andrei Ungureanu [MVP]]

You can also try to disable media sense in Windows (just do a search on
Google and you'll find it). This way, if your link will go down, Windows
will not try to renew the ip address.
But as Richard said this will only solve the symptom of the problem, not the
problem.

--
Regards,
Andrei Ungureanu
www.eventid.net
Test our new EventReader!
http://www.altairtech.ca/eventreader/default2.asp?ref=au

Happy to be of assistance.

--
Richard G. Harper [MVP Shell/User] (e-mail address removed)
* NEW! Catch my blog ... http://msmvps.com/blogs/rgharper/
* PLEASE post all messages and replies in the newsgroups
* The Website - http://rgharper.mvps.org/
* HELP us help YOU ... http://www.dts-l.org/goodpost.htm

Thanks for the clarification. Note: I've downloaded ZoneAlarm to provide
some
firewall protection and was surprised to see the same interface as the
one
from Computer Associates. I've since learned that CA's eZ Firewall is
based
on the code from ZoneAlarm.

Thanks again for your help!

Disabling APIPA will only solve the symptom of the problem, not the
problem
itself. Same with your firewall - it's noting the change due to loss of
connectivity, not causing the problem.

--
Richard G. Harper [MVP Shell/User] (e-mail address removed)
* NEW! Catch my blog ... http://msmvps.com/blogs/rgharper/
* PLEASE post all messages and replies in the newsgroups
* The Website - http://rgharper.mvps.org/
* HELP us help YOU ... http://www.dts-l.org/goodpost.htm


Richard,

I understand what you mean by APIPA being a sign of the problem,
however,
I
was troubleshooting both from my end and on the phone with my ISP and
everything checked out fine. Before I lost connectivity, I noticed my
firewall detected a "new" network (169.254.x.x). Is it possible that
my
firewall prevented me from getting out to the DHCP server? Or was my
firewall
just telling me that I had been switched to the private network. Note:
No
problems (yet) since my OS reinstall but I will triple check all of my
connections the next time this happens.

Did you notice the posting from 3c273? I had seen something in the
knowledge
base about disabling APIPA but I don't like to mess with the registry.

I appreciate your guidance.

:

APIPA is not your problem, it's a sign of your problem. Whenever
your
computer cannot get an IP address assigned (or reassigned) by your
DHCP
server you get the private IP address instead. This is entirely
normal
and
cannot be disabled. What you need to be looking for is the reason
your
computer loses its connection to the network and substitutes a
private IP
address instead. Any bad hardware, including cables, between you and
your
DHCP server could cause this.

--
Richard G. Harper [MVP Shell/User] (e-mail address removed)
* NEW! Catch my blog ... http://msmvps.com/blogs/rgharper/
* PLEASE post all messages and replies in the newsgroups
* The Website - http://rgharper.mvps.org/
* HELP us help YOU ... http://www.dts-l.org/goodpost.htm


Every now and then, my IP address changes to a 169.254.x.x address
and
I
lose
my internet connection. Nothing I've tried has allowed me to get
rid of
this
address (except for a re-install of 2k.)

Does anyone have any suggestions?

Is there some way to APIPA off?

Thanks