Ubuntu uses DNS cache to speed up Internet access

Install dnsmasq In Ubuntu. Run the following command: sudoapt-getinstalldnsmasq to edit the configuration file of dnsmasq: sudogedit/etc/dnsmasq. conf: # resolv-file = replace it with the following statement: resolv-file =/etc/resolv. dnsmasq. conf and then execute the command to/etc/resolv

Run the following command to install dnsmasq in Ubuntu:

Sudo apt-get install dnsmasq

Edit the configuration file of dnsmasq with the following command:

Sudo gedit/etc/dnsmasq. conf

Find the following item:

# Resolv-file =

Replace the following statement:

Resolv-file =/etc/resolv. dnsmasq. conf

Then run the command to create resolv. dnsmasq. conf with a copy of/etc/resolv. conf:

Sudo cp/etc/resolv. conf/etc/resolv. dnsmasq. conf

Edit resolv. conf and run the following command:

Sudo gedit/etc/resolv. conf

Comment out all the domain name servers and add the following lines

Nameserver 127.0.0.1

Save and exit. Run the following command:

Sudo gedit/etc/ppp/peers/wvdial

Add # Before usepeerdns, that is, overwrite this statement. Prevent resolv. conf from being overwritten by pppoe.

Restart.