So its searching for a DNS server in that range because it's a defined
default place to find a DNS server.  Theres no indication that its looking
at the netware boxes....  So is ping not reading /etc/resolv.conf?

Is there something that I'm not aware of that is telling ping to look
elsewhere for DNS services?  Does that spark any ideas for anyone?

-----Original Message-----
From: Carl Cerecke [mailto:[EMAIL PROTECTED] 
Sent: Tuesday, 2 November 2004 11:47 a.m.
To: CLUG
Cc: David Kirk
Subject: Re: Reverse DNS Lookups from SuSE 9.1


David Kirk wrote:

 > So, we can see the the DNS lookups are working in both directions  >
(forward and reverse), but when I use ping it does something with  >
224.0.0.251.  Isn't that a multicast address?  I don't know anything  >
about multicast (if that's what it is).  What does this mean?

From:
http://www.iana.org/assignments/multicast-addresses

we see that 224.0.0.251 is used for DNS discovery on a local network:

"The range of addresses between 224.0.0.0 and 224.0.0.255, inclusive, is
reserved for the use of routing protocols and other low-level topology
discovery or maintenance protocols, such as gateway discovery and group
membership reporting.  Multicast routers should not forward any multicast
datagram with destination addresses in this range, regardless of its TTL."


Cheers,
Carl.

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