Updating rhel 4
Varnish Cache 4.1 and 5.x are supported on EL6 and EL7.
Starting from Varnish Cache 5.0, we’ve simplified our packaging down to two: the main package and a development package.
For example, to install kmod-r8168 (Realtek r8168 NIC driver): The elrepo-extras channel provides packages and their dependencies that replace/update RHEL distribution packages.
It may be enabled in the /etc/yum.repos.d/file or used with 'yum --enablerepo=elrepo-extras'.
You should plan to patch the Redhat Linux yearly twice to eliminate the security holes and bug fixes. It also used by Oracle Cloud and Oracle Engineered Systems such as Oracle Exadata and others.Potential users can freely download Oracle Linux through Oracle's E-delivery service (Oracle Software Delivery Cloud) or from a variety of mirror sites, and can deploy and distribute it without cost.Oracle claims unilaterally this allows unchanged installation and run of Oracle middleware and third-party RHEL-certified applications, but it does not provide any reference to third-party documentation.Oracle Corporation uses Oracle Linux extensively within Oracle Public Cloud, internally to lower IT costs.