Welcome to docker.ru hosting provider linux mirror located at Moscow, Russian Federation.
Server configuration: Linux with OpenZFS, 2 x E5-2670v2, 128 GB ECC memory, 12 x 4 TB raidz2 + 1 TB SSD for L2ARC.
Network: 20 gbps uplink, IPv4 (185.253.23.31), IPv6 (2a04:8580:ffff:fffe::2).
My hostname is mirror.docker.ru Managing DNS Settings
Red Hat Enterprise Linux 4: System Administration Guide
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8.8. Managing DNS Settings

The DNS tab allows you to configure the system's hostname, domain, name servers, and search domain. Name servers are used to look up other hosts on the network.

If the DNS server names are retrieved from DHCP or PPPoE (or retrieved from the ISP), do not add primary, secondary, or tertiary DNS servers.

If the hostname is retrieved dynamically from DHCP or PPPoE (or retrieved from the ISP), do not change it.

Figure 8-14. DNS Configuration

NoteNote
 

The name servers section does not configure the system to be a name server. Instead, it configures the name servers to use when resolving IP addresses to hostnames and vice versa.

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