diff --git a/p2p/protocol.go b/p2p/protocol.go
index 9438ab8e47..3049670931 100644
--- a/p2p/protocol.go
+++ b/p2p/protocol.go
@@ -19,6 +19,7 @@ package p2p
 import (
 	"fmt"
 
+	"github.com/ethereum/go-ethereum/p2p/discutil"
 	"github.com/ethereum/go-ethereum/p2p/enode"
 	"github.com/ethereum/go-ethereum/p2p/enr"
 )
@@ -54,6 +55,11 @@ type Protocol struct {
 	// but returns nil, it is assumed that the protocol handshake is still running.
 	PeerInfo func(id enode.ID) interface{}
 
+	// DialCandidates, if non-nil, is a way to tell Server about protocol-specific nodes
+	// that should be dialed. The server continuously reads nodes from the iterator and
+	// attempts to create connections to them.
+	DialCandidates discutil.Iterator
+
 	// Attributes contains protocol specific information for the node record.
 	Attributes []enr.Entry
 }