This change allows to define two cluster CIDRs for compatibility with
Kubernetes dual-stack, with an assumption that two CIDRs are usually
IPv4 and IPv6.
Signed-off-by: Michal Rostecki <vadorovsky@gmail.com>
This PR logs `ipset` and `iptables` commands at log level 9.
I've recently encountered an issue with Kubernetes v1.24.0 and
`kube-router` v1.5.1 where the node's network goes bonkers as soon as
`NetworkPolicyController::syncNetworkPolicyChains` is executed (last log
line is "Syncing network policy chains took 48.780838ms"). After that,
`ssh` freezes and `kubelet` becomes inacessible.
Debugging this issue proved to be quite daunting, specially due to the
lack of insight on which network policies are being applied.
Adding these logs have helped the debugging process immensely so far.
