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Manual config network interface ubuntu

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Xưa học môn mạng TH qua RedHat/CentOS hay động task này.

# The primary network interface
auto eth0
iface eth0 inet static
address 192.168.X.X
netmask 255.255.255.0
gateway 192.168.X.X
dns-nameservers X.X.X.X
If you have more than one DNS server, just add a space between each:

dns-nameservers X.X.X.X Y.Y.Y.Y Z.Z.Z.Z

DNS: vnpt: 203.162.1.191
Google 8.8.4.4
Thường dùng 8.8.8.8 và 8.8.4.4 nhưng đôi khi oẳng nên kết hợp GG + VNPT vô:
203.162.1.19[1/2] và 8.8.[4/8].[4/8]

Up / down eth0 (network Interface)
sudo ifdown eth0
sudo ifup eth0

edit file: /etc/network/interface

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