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<div class="moz-cite-prefix">On 05/02/14 01.14, Geordie wrote:<br>
</div>
<blockquote
cite="mid:20140204191446.258a275d@GeordiesLaptop.home.network"
type="cite">
<pre wrap="">
to Sten Carlsen
Did you consider the importance of the 169.254.x.x IP?
RFC 5227
<a class="moz-txt-link-freetext" href="http://tools.ietf.org/search/rfc5227">http://tools.ietf.org/search/rfc5227</a>
Allocation of IPv4 Link-Local Addresses [RFC3927] can be thought of
as a special case of this mechanism, where the configuring agent is
a pseudo-random number generator, and the action it takes upon being
notified of a conflict is to pick a different random number and try
again. In fact, this is exactly how IPv4 Link-Local Addressing was
implemented in Mac OS 9 back in 1998. If the DHCP client failed to
get a response from any DHCP server, it would simply make up a fake
response containing a random 169.254.x.x address. If the ARP module
reported a conflict for that address, then the DHCP client would try
again, making up a new random 169.254.x.x address as many times as
was necessary until it succeeded. Implementing ACD as a standard
feature of the networking stack has the side effect that it means
that half the work for IPv4 Link-Local Addressing is already done.
Actually I never gave it much thought until I tried to setup LXC
containers on a server and the IP addresses were not static. The
addressing has been this way since we moved here in 2007. I have been
through several generation of linux boxes and Windows xp and it was
always the same. I have replaced routers and switches with the results
So I guess the DHCP client was doing its job on all the different boxes.
I am assuming, please correct me if I wrong, that I need to set up dhcp
server to handle the queries. But how does one actual have the dhcp
server connect to the wan through the Motorola? Or does the DHCP server
auto magically connect. Is there something special I need to ask or
look for?</pre>
</blockquote>
I don't know about the Motorola (never seen one of them), but I have
seen that more and more things use the 169.154.x.x IPs if they don't
find the DHCP server they are looking for.<br>
<br>
The question I would consider is this:<br>
Did the boxes get their addresses from DHCP or did they invent them
as they are supposed to? If they get the address from DHCP, the
setup should give them the gateway address as well, if they invent
them, they will not have a gateway address and hence no internet
access.<br>
<br>
Changing to the RFC 1918 address set or any other will tell you that.<br>
<blockquote
cite="mid:20140204191446.258a275d@GeordiesLaptop.home.network"
type="cite">
<pre wrap="">
Thanks for the read
Geordie
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</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Best regards
Sten Carlsen
No improvements come from shouting:
"MALE BOVINE MANURE!!!"
</pre>
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