CanUseIptablesProxier returns true if we should use the iptables Proxier instead of the "classic" userspace Proxier.

CleanupLeftovers removes all iptables rules and chains created by the Proxier It returns true if an error was encountered.

NewProxier returns a new Proxier given an iptables Interface instance.

the mark-for-masquerade chain TODO: let kubelet manage this chain.

Proxier is an iptables based proxy for connections between a localhost:lport and services that provide the actual backends.

IptablesVersioner can query the current iptables version.

KernelCompatTester tests whether the required kernel capabilities are present to run the iptables proxier.