<code bash>

# кеширование и ускорение dns passwd groups services protocols ###linux ###tuning ###cache
vi /etc/resolv.conf
nameserver 192.168.1.1
nameserver 8.8.8.8
options single-request
# end vi
sudo apt-get install nscd || yum -y install nscd
sudo service nscd restart
grep  single-request /etc/resolv.conf || echo -e '\noptions single-request' >>/etc/resolv.conf  
</code>

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