DNS Problems and 127.0.0.2 Address
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From: Joseph Morales on 19 Apr 2010 19:33 We're experimenting with deploying SUSE 10 SP3 systems and adding them to a Windows domain and DNS. Oddly, when we register in DNS, it gets registered under two address: the real IP address, and the address 127.0.0.2. Also, an ip addr command shows that the loopback device lo has two addresses: 127.0.0.1 and 127.0.0.2. The above behavior is just on SP3. On SUSE 10 SP2, the lo device has only the 127.0.0.1 address, and the system is able to register correctly in DNS. Has anyone ever seen this behavior? Do you know what the 127.0.0.2 address signifies, or how to get rid of it? Thanks, Joseph
From: Vlad_Inhaler on 22 Apr 2010 12:22 On Apr 20, 1:33 am, "Joseph Morales" <joseph.mora...(a)unisys.com> wrote: > We're experimenting with deploying SUSE 10 SP3 systems and adding them to a > Windows domain and DNS. Oddly, when we register in DNS, it gets registered > under two address: the real IP address, and the address 127.0.0.2. Also, an > ip addr command shows that the loopback device lo has two addresses: > 127.0.0.1 and 127.0.0.2. > > The above behavior is just on SP3. On SUSE 10 SP2, the lo device has only > the 127.0.0.1 address, and the system is able to register correctly in DNS. > > Has anyone ever seen this behavior? Do you know what the 127.0.0.2 address > signifies, or how to get rid of it? > > Thanks, Joseph Firstly, so do I. I have two network cards and the following entries in /etc/hosts: 127.0.0.1 localhost 127.0.0.2 machine.mydomain machine 192.168.1.2 machine machine 192.168.1.3 othermachine.mydomain othermachine 192.168.1.11 laptop.mydomain laptop (ok, I lie - names and ip-addresses changed because I felt like it) I do not have any problems here, Samba, NFS and IP-Forwarding to the 'net all work fine. 'machine' also acts as a bind caching server, I don't use Windows domains. One other point, alt.os.linux.suse is the english-language group, this one is 99% German language. Not that anyone is unhappy with your presence :-)
From: Joseph Morales on 21 Apr 2010 19:38
Thanks, G�nther and Joe. "G�nther Schwarz" <strap(a)gmx.de> wrote in message news:8369j4F5j6U1(a)mid.individual.net... > Simply edit the /etc/hosts file. Could you post the local part of this > file as well as the output of 'ping localhost'? It turns out that editing the /etc/hosts file doesn't help this particular problem. However, I received a suggestion from another friend that did the trick. I edited the /etc/sysconfig/network/ifcfg-lo file and deleted the entry for 127.0.0.2. Then I did a service network restart and was able to do the dns register. This time the system registered with only the correct address. After that I restored the 127.0.0.2 address to the ifcfg-lo file again and once more restarted the network service. So the 127.0.0.2 loopback is still available if some app needs it some day. Regards, Joseph |