[lugs] Pinging shows unknown host

[vriztll at hotmail.com (Vriz)]

Hi,

Got the solution from my colleague.
Run dhcpcd with "-r -h `hostname`" as the DHCPCDARGS in the /sbin/ifup
script.



----- Original Message -----
From: <wearitdown at yahoo.com.sg>
To: "Vriz" <vriztll at hotmail.com>
Cc: "t - DCLUG" <dclug at tux.org>; "t - Singapore LUG"
<slugnet at lists.lugs.org.sg>; "zt - Boston Linux Mail List"
<discuss at blu.org>; "zt - New York Linux User Grp" <nylug-talk at nylug.org>;
"zt - Northern Virginia LUG" <novalug at tux.org>
Sent: Friday, January 18, 2002 5:35 PM
Subject: Re: [lugs] Pinging shows unknown host


> Vriz wrote:
>
> > I'm connecting to a network with the domain name test.com. My PCs with
> > the windows OS (hostname is pc1 and pc2) could ping each other with
> > their hostname or hostname with domain name. I installed Redhat 7.2 on
> > another system and change the hostname to pc3 by modifying the
> > /etc/hosts and /etc/sysconfig/network files and restarting the PC
> > (another other elegant way to change the hostname using a system
> > command? did I miss out any other files?).
> >
> > pc3 could ping pc1 and pc2, but pc1 and pc2 couldn't ping pc3, and
> > shows the unknown host msg. When I type domainname in pc3, it shows
> > none. Therefore, I run domainname test.com on pc3 to set the
> > domainname (is this necessary? I believe so. What files are changed by
> > this command?). I still couldn't ping pc3 from my windows or other
> > linux systems. Could someone help me with this? Thank you.
> >
>
> Perhaps your windows pcs are resolving each other using some windows
> specific name resolution (something over samba or netbios or something),
> which your unix pc obviously isn't part of unless you have configured
> samba appropriately.
>
> As some others have implied, it's rather hard to pinpoint the exact
> fault without more specific information.  How are you doing the ping?
>  "ping pc2" and "ping pc2.test.com" are different.  What's in your hosts
> file on pc3?  If you have entries for both pc1 and pc2, of course pings
> from pc3 work properly.
>
> In the end, for such a small network, it's probably easiest to just make
> it "work" rather than figuring out where the problem lies - add entries
> for pc1, pc2 and pc3 to your /etc/hosts or
> %systemroot%\system32\drivers\etc\hosts respectively.
>
>
>
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