Re: ipcalc problem

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---- Bill Crawford <billcrawford1970@xxxxxxxxx> wrote: 
> On Thursday 19 February 2009 16:20:49 Steve wrote:
> 
> > I've been on a long wild goose chase trying to figure out why I get one of
> > two different hostnames alternatively when I boot the system. Based on what
> > I read in the dhclient man page, I believed that the hostname was provided
> > by the dhcp server in a dhcp protocol message. While that may still be
> > true, my F9 system does not use that potential source of information to set
> > the hostname. The hostname is actually set in the
> > /etc/sysconfig/network-scripts/ifup-post script by this code:
> 
> It *is* possible for a DHCP server to be giving you alternating addresses; it's 
> also possible you have two (or more) DHCP servers answering requests. One very 
> remote possibility is e.g. an old procurve (sp?) switch, once spent an hour or 
> two with a colleague tracking down a similar problem, where a random switch on 
> our network started replying to DHCP requests and would occasionally respond 
> faster than the "real" one.
> 
> What are the results of running "host" on the IP address you get given?

# host 192.168.1.186
186.1.168.192.in-addr.arpa domain name pointer host_1.
186.1.168.192.in-addr.arpa domain name pointer host_2.

Steve

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