KnownMode enum
Specify which proxy mode to use ('IPTABLES', 'IPVS' or 'NFTABLES')
Fields
| Iptables | IPTables proxy mode |
| Ipvs | IPVS proxy mode. Must be using Kubernetes version >= 1.22. |
| Nftables | NFTables proxy mode. Must be using Kubernetes version >= 1.33. |