I am running OpenSuSE Leap 42.3 on a machine with 2 NICs. I am also running a Bind DNS server on the same system. I did an experiment in order to assign a unique hostname to each of the NIC interface cards by simply editing my /etc/hosts file as shown below: (sorry, I am not sure how to format this for a newsgroup.) bigbang:/etc # cat /etc/hosts 127.0.0.1 localhost # added for each nic 192.168.10.100 bigbangInternal.mydomainname.com bigbangInternal 10.10.10.100 bigbangExternal.mydomainname.com bigbangExternal ::1 localhost ipv6-localhost ipv6-loopback fe00::0 ipv6-localnet ff00::0 ipv6-mcastprefix ff02::1 ipv6-allnodes ff02::2 ipv6-allrouters ff02::3 ipv6-allhosts My host.conf file is configured to look at the hosts file first when resolving names: bigbang:/etc # cat /etc/host.conf ## file comments deleted for brevity... order hosts, bind multi on My nsswitch.conf file is also configured to look at the hosts file first when resolving names: bigbang:/etc # cat /etc/nsswitch.conf ## file comments deleted for brevity... passwd: compat group: compat hosts: files mdns_minimal [NOTFOUND=return] dns networks: files dns services: files protocols: files rpc: files ethers: files netmasks: files netgroup: files nis publickey: files bootparams: files automount: files nis aliases: files After editing the /etc/hosts file I flushed the name service cache: bigbang:/etc # systemctl restart nscd.service and when I test things out I get the following "surprising" results which appear at first glance to show that the name resolving order specified in nsswitch.conf is not being honored. But something else even deeper is going on as well that really has me baffled: bigbang:/etc # ping bigbangInternal ping: unknown host bigbangInternal ??? I didn't expect that! bigbang:/etc # getent hosts 127.0.0.1 localhost 192.168.10.100 bigbangInternal.mydomainname.com bigbangInternal 10.10.10.100 bigbangExternal.mydomainname.com bigbangExternal that looks good... bigbang:/etc # getent hosts localhost ::1 localhost ??? I am a bit surprised by this as I did not enable IPv6 addresses in YaST bigbang:/etc # getent hosts bigbangInternal bigbang:/etc # getent hosts bigbangInternal.mydomainname.com ??? no response! why not? bigbang:/etc # getent hosts 10.10.10.100 10.10.10.100 mydomainname.com ??? huh? Why did I get my dns domain name? bigbang:/etc # getent hosts 192.168.10.100 ??? no response! My guess is that these attempts to resolve these names and ip addresses is being done by my bind dns server and not by looking things up in the /etc/hosts file. But I don't understand why given that I am specifying that the order of lookup is to be done first via the /etc/hosts file and then by the bind dns server if the lookup in the hosts file fails. What am I missing and/or not understanding? Thanks in advance for any guidance/clues as to why I am seeing these results. Marc... -- Linux Counter -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org