Dhcp not updating dns linux
My home network is the same as millions of other Internet users: dynamic IP obtained from my ISP via DHCP.
Wanting to make sure that I can connect to my home network remotely, even if the underlying dynamic IP changes, I looked around for a reliable (and hopefully free! I found dyndns.org, which I use today, and recently someone also pointed me to
For Fedora Core (and Red Hat) users, you will need to install both the bind (for dnssec-keygen) and bind-utils (for nsupdate) packages.
If you plan to configure a DNS server, also read the companion article on configuring your server.
For instance, ..display the configuration of device eth0 only.
Enabling And Disabling An Interface When a network interface is active, it is able to send and receive data; when it is inactive, it is not able to transmit or receive.
nsupdate is a fantastic little utility that enable quick and secure DNS zone updates.
Setup is quick and painless, and use is fairly intuitive for anyone remotely familiar with DNS, and skilled enough to admin their own Linux system. This key is created by running the dnssec-keygen utility.
Running the ifconfig command with no arguments, like this: eth0 Link encap: Ethernet HWaddr :90:e3:e5 inet addr:192.168.1.29 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::aff:fe70:e3f5/64 Scope: Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:54071 errors:1 dropped:0 overruns:0 frame:0 TX packets:48515 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:22009423 (20.9 Mi B) TX bytes:25690847 (24.5 Mi B) Interrupt:10 Base address:0xd020 lo Link encap: Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope: Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:83 errors:0 dropped:0 overruns:0 frame:0 TX packets:83 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:7766 (7.5 Ki B) TX bytes:7766 (7.5 Ki B) wlan0 Link encap: Ethernet HWaddr 58:a2:c:36 inet addr:192.168.1.64 Bcast:192.168.2.255 Mask:255.255.255.0 inet6 addr: fe80::6aa3:c4ff:fe46/64 Scope: Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:436968 errors:0 dropped:0 overruns:0 frame:0 TX packets:364103 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:115886055 (110.5 Mi B) TX bytes:83286188 (79.4 Mi B) These are the traditional naming conventions for network interfaces under Linux; other operating systems may have different names.
The TCP/IP is set to,'Obtain an IP address automatically' and 'Obtain DNS server address automatically'. DNS tab - DNS server addresses box is blank 'Append primary and connection specific DNS suffixes' is dotted and 'Append parent suffixes of the primary suffix' is ticked. Net BIOS setting - Default (checked) - Use Net BIOS setting from the DHCP server. PS While reading the WNC status the computer has found the Network address, but all above remains true.
'Append these DNS suffixes (in order)' is unchecked. If static IP address is used or the DHCP server does not provide Net BIOS setting enable Net BIOS over TCP/IP. In the Command Prompt type ipconfig /release and press enter.
Under Windows NT, DNS was static and had to be manually altered to make changes.
With the advent of Windows 2000, many administrators were elated to hear that it contained a new feature called Dynamic DNS (DDNS).