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I tried to set up an CentOS7-Server with static IP-adresses and DNS-servers. The problem so far, is, that the Domain-Name-Service is not working properly.

TYPE=Ethernet
BOOTPROTO=static
IPADDR=***.***.***.49
NETMASK=255.255.255.240
NM_CONTROLLED=no
DEFROUTE=yes
PEERDNS=no
PEERROUTES=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
IPV6_FAILURE_FATAL=no
NAME=enp4s0f0
UUID=*******************************
DEVICE=enp4s0f0
ONBOOT=yes
DNS1=***.***.22.60
DNS2=***.***.56.60

The IP-address is created and the name-servers are "ping-able", but the DNS is not working. The resolv.conf automatically gets the following input:

DNS1=***.***.22.60
DNS2=***.***.56.60

Does someone have an idea how it comes to that problem.

(Its a clean CentOS7 installation with a GUI, nothing else has been installed or configured.)

thanks in advance

most sincerely

Twinhand

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  • Do DNS lookups work if you query those servers directly? Try dig @***.***.22.60 serverfault.com to test this. (Using the actual IP address.) Does the DNS1=... part appear literally in your /etc/resolv.conf file? – Ladadadada Oct 19 '15 at 11:56
  • Thanks for the fast respond. So, if I do dig "at"..22.60, it finds something.Thanks for the fast respond. So, if I do dig "at"..22.60, it finds something. If I try to use dig "at"serverfault.com it get the following response "dig "at"serverfault.com dig: couldn't get address for 'serverfault.com': not found " And yes DNS1= is literally appearing in the resolv.conf – Twinhand Oct 19 '15 at 12:04
  • OK, it seems like I found my problem. if I delete the option "PEERDNS=yes". The system is writing the name-servers correctly (nameserver ..***.***) to the resolv.conf and the DNS is working properly. Thanks for your help. – Twinhand Oct 19 '15 at 13:11
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OK, it seems like I found my problem. if I delete the option "PEERDNS=yes". The system is writing the name-servers correctly (nameserver ...) to the resolv.conf and the DNS is working properly. Thanks for your help.

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