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https://wiki.ihor.ru/linux:centos:%D0%BA%D0%B0%D0%BA_%D0%B4%D0%BE%D0%B1%D0%B0%D0%B2%D0%B8%D1%82%D1%8C_ip-%D0%B0%D0%B4%D1%80%D0%B5%D1%81
Как добавить IP-адрес в CentOS