diff --git a/node/builder.go b/node/builder.go
index 178f973e5..dd0af277d 100644
--- a/node/builder.go
+++ b/node/builder.go
@@ -58,7 +58,6 @@ type special struct{ id int }
 //nolint:golint
 var (
 	DefaultTransportsKey = special{0} // Libp2p option
-	PNetKey              = special{1} // Option + multiret
 	DiscoveryHandlerKey  = special{2} // Private type
 	AddrsFactoryKey      = special{3} // Libp2p option
 	SmuxTransportKey     = special{4} // Libp2p option
@@ -142,7 +141,6 @@ func libp2p() Option {
 		Override(new(peerstore.Peerstore), pstoremem.NewPeerstore),
 
 		Override(DefaultTransportsKey, lp2p.DefaultTransports),
-		Override(PNetKey, lp2p.PNet),
 
 		Override(new(lp2p.RawHost), lp2p.Host),
 		Override(new(host.Host), lp2p.RoutedHost),
diff --git a/node/modules/lp2p/host.go b/node/modules/lp2p/host.go
index ccb579763..6809d4a5c 100644
--- a/node/modules/lp2p/host.go
+++ b/node/modules/lp2p/host.go
@@ -79,6 +79,7 @@ func DHTRouting(client bool) interface{} {
 			dhtopts.Client(client),
 			dhtopts.Datastore(dstore),
 			dhtopts.Validator(validator),
+			dhtopts.Protocols("/lotus/kad/1.0.0"),
 		)
 
 		if err != nil {
diff --git a/node/modules/lp2p/pnet.go b/node/modules/lp2p/pnet.go
deleted file mode 100644
index f182be125..000000000
--- a/node/modules/lp2p/pnet.go
+++ /dev/null
@@ -1,63 +0,0 @@
-package lp2p
-
-import (
-	"fmt"
-	"strings"
-
-	"github.com/libp2p/go-libp2p"
-	pnet "github.com/libp2p/go-libp2p-pnet"
-)
-
-var LotusKey = "/key/swarm/psk/1.0.0/\n/base16/\n20c72388e6299c7bbc1b501fdcc8abe4f89f798e9b93b2d2bc02e3c29b6a088e"
-
-type PNetFingerprint []byte
-
-func PNet() (opts Libp2pOpts, fp PNetFingerprint, err error) {
-	protec, err := pnet.NewProtector(strings.NewReader(LotusKey))
-	if err != nil {
-		return opts, nil, fmt.Errorf("failed to configure private network: %s", err)
-	}
-	fp = protec.Fingerprint()
-
-	opts.Opts = append(opts.Opts, libp2p.PrivateNetwork(protec))
-	return opts, fp, nil
-}
-
-/*
-func PNetChecker(repo repo.Repo, ph host.Host, lc fx.Lifecycle) error {
-	// TODO: better check?
-	swarmkey, err := repo.SwarmKey()
-	if err != nil || swarmkey == nil {
-		return err
-	}
-
-	done := make(chan struct{})
-	lc.Append(fx.Hook{
-		OnStart: func(_ context.Context) error {
-			go func() {
-				t := time.NewTicker(30 * time.Second)
-				defer t.Stop()
-
-				<-t.C // swallow one tick
-				for {
-					select {
-					case <-t.C:
-						if len(ph.Network().Peers()) == 0 {
-							log.Warn("We are in private network and have no peers.")
-							log.Warn("This might be configuration mistake.")
-						}
-					case <-done:
-						return
-					}
-				}
-			}()
-			return nil
-		},
-		OnStop: func(_ context.Context) error {
-			close(done)
-			return nil
-		},
-	})
-	return nil
-}
-*/