Replace the eBPF WireGuard proxy with loopback endpoint addressing

client/internal/ebpf/manager/manager.go

@@ -2,10 +2,8 @@ package manager
 
 import "net/netip"
 
-// Manager is used to load multiple eBPF programs. E.g., current DNS programs and WireGuard proxy
+// Manager is used to load eBPF programs. Currently only the DNS forwarder uses one.
 type Manager interface {
 	LoadDNSFwd(ip netip.Addr, dnsPort int) error
 	FreeDNSFwd() error
-	LoadWgProxy(proxyPort, wgPort int) error
-	FreeWGProxy() error
 }