Even the kernel version isn't particularly helpful, as Red Hat is backporting new features into the version shipped by RHEL 6 and 7. One specific example is th

Even the kernel version isn't particularly helpful, as Red Hat is backporting new features into the version shipped by RHEL 6 and 7. One specific example is the SO_REUSEPORT socket option which was added to Linux kernel 3.9, and was subsequently backported and became available since RHEL 6.5, which uses version 2.6.32 of the Linux kernel.[0] [0] https://en.wikipedia.org/wiki/Red_Hat_Enterprise_Linux#Kernel_backporting https://en.wikipedia.org/wiki/Red_Hat_Enterprise_Linux#Kerne...