diff --git a/finality-aleph/src/network/mock.rs b/finality-aleph/src/network/mock.rs
index 6de9642bb1..2567b307b4 100644
--- a/finality-aleph/src/network/mock.rs
+++ b/finality-aleph/src/network/mock.rs
@@ -1,9 +1,4 @@
-use std::{
-    collections::{HashSet, VecDeque},
-    fmt,
-    sync::Arc,
-    time::Duration,
-};
+use std::{collections::VecDeque, fmt, sync::Arc, time::Duration};
 
 use aleph_primitives::KEY_TYPE;
 use async_trait::async_trait;
@@ -94,14 +89,14 @@ impl<T> Default for Channel<T> {
     }
 }
 
-pub type MockEvent = Event<MockMultiaddress, MockPublicKey>;
+pub type MockEvent = Event<MockPublicKey>;
 
 pub type MockData = Vec<u8>;
 
 pub struct MockEventStream(mpsc::UnboundedReceiver<MockEvent>);
 
 #[async_trait]
-impl EventStream<MockMultiaddress, MockPublicKey> for MockEventStream {
+impl EventStream<MockPublicKey> for MockEventStream {
     async fn next_event(&mut self) -> Option<MockEvent> {
         self.0.next().await
     }
@@ -132,8 +127,6 @@ impl NetworkSender for MockNetworkSender {
 
 #[derive(Clone)]
 pub struct MockNetwork {
-    pub add_reserved: Channel<(HashSet<MockMultiaddress>, Protocol)>,
-    pub remove_reserved: Channel<(HashSet<MockPublicKey>, Protocol)>,
     pub send_message: Channel<(Vec<u8>, MockPublicKey, Protocol)>,
     pub event_sinks: Arc<Mutex<Vec<mpsc::UnboundedSender<MockEvent>>>>,
     event_stream_taken_oneshot: Arc<Mutex<Option<oneshot::Sender<()>>>>,
@@ -142,17 +135,11 @@ pub struct MockNetwork {
 }
 
 #[derive(Debug, Copy, Clone)]
-pub enum MockSenderError {
-    SomeError,
-}
+pub struct MockSenderError;
 
 impl fmt::Display for MockSenderError {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        match self {
-            MockSenderError::SomeError => {
-                write!(f, "Some error message")
-            }
-        }
+        write!(f, "Some error message")
     }
 }
 
@@ -162,7 +149,6 @@ impl Network for MockNetwork {
     type SenderError = MockSenderError;
     type NetworkSender = MockNetworkSender;
     type PeerId = MockPublicKey;
-    type Multiaddress = MockMultiaddress;
     type EventStream = MockEventStream;
 
     fn event_stream(&self) -> Self::EventStream {
@@ -192,21 +178,11 @@ impl Network for MockNetwork {
             error,
         })
     }
-
-    fn add_reserved(&self, addresses: HashSet<Self::Multiaddress>, protocol: Protocol) {
-        self.add_reserved.send((addresses, protocol));
-    }
-
-    fn remove_reserved(&self, peers: HashSet<Self::PeerId>, protocol: Protocol) {
-        self.remove_reserved.send((peers, protocol));
-    }
 }
 
 impl MockNetwork {
     pub fn new(oneshot_sender: oneshot::Sender<()>) -> Self {
         MockNetwork {
-            add_reserved: Channel::new(),
-            remove_reserved: Channel::new(),
             send_message: Channel::new(),
             event_sinks: Arc::new(Mutex::new(vec![])),
             event_stream_taken_oneshot: Arc::new(Mutex::new(Some(oneshot_sender))),
diff --git a/finality-aleph/src/network/mod.rs b/finality-aleph/src/network/mod.rs
index 99c2cb75cb..0870b296f6 100644
--- a/finality-aleph/src/network/mod.rs
+++ b/finality-aleph/src/network/mod.rs
@@ -88,17 +88,15 @@ pub trait NetworkSender: Send + Sync + 'static {
 }
 
 #[derive(Clone)]
-pub enum Event<M, P> {
-    Connected(M),
-    Disconnected(P),
+pub enum Event<P> {
     StreamOpened(P, Protocol),
     StreamClosed(P, Protocol),
     Messages(Vec<(Protocol, Bytes)>),
 }
 
 #[async_trait]
-pub trait EventStream<M, P> {
-    async fn next_event(&mut self) -> Option<Event<M, P>>;
+pub trait EventStream<P> {
+    async fn next_event(&mut self) -> Option<Event<P>>;
 }
 
 /// Abstraction over a network.
@@ -106,8 +104,7 @@ pub trait Network: Clone + Send + Sync + 'static {
     type SenderError: std::error::Error;
     type NetworkSender: NetworkSender;
     type PeerId: Clone + Debug + Eq + Hash + Send;
-    type Multiaddress: Debug + Eq + Hash;
-    type EventStream: EventStream<Self::Multiaddress, Self::PeerId>;
+    type EventStream: EventStream<Self::PeerId>;
 
     /// Returns a stream of events representing what happens on the network.
     fn event_stream(&self) -> Self::EventStream;
@@ -118,12 +115,6 @@ pub trait Network: Clone + Send + Sync + 'static {
         peer_id: Self::PeerId,
         protocol: Protocol,
     ) -> Result<Self::NetworkSender, Self::SenderError>;
-
-    /// Add peers to one of the reserved sets.
-    fn add_reserved(&self, addresses: HashSet<Self::Multiaddress>, protocol: Protocol);
-
-    /// Remove peers from one of the reserved sets.
-    fn remove_reserved(&self, peers: HashSet<Self::PeerId>, protocol: Protocol);
 }
 
 /// Abstraction for requesting own network addresses and PeerId.
diff --git a/finality-aleph/src/network/service.rs b/finality-aleph/src/network/service.rs
index 2c2a05efae..7c231e80bd 100644
--- a/finality-aleph/src/network/service.rs
+++ b/finality-aleph/src/network/service.rs
@@ -1,7 +1,6 @@
 use std::{
     collections::{HashMap, HashSet},
     future::Future,
-    iter,
 };
 
 use futures::{channel::mpsc, StreamExt};
@@ -147,20 +146,10 @@ impl<N: Network, D: Data> Service<N, D> {
 
     fn handle_network_event(
         &mut self,
-        event: Event<N::Multiaddress, N::PeerId>,
+        event: Event<N::PeerId>,
     ) -> Result<(), mpsc::TrySendError<D>> {
         use Event::*;
         match event {
-            Connected(multiaddress) => {
-                trace!(target: "aleph-network", "Connected event from address {:?}", multiaddress);
-                self.network
-                    .add_reserved(iter::once(multiaddress).collect(), Protocol::Authentication);
-            }
-            Disconnected(peer) => {
-                trace!(target: "aleph-network", "Disconnected event for peer {:?}", peer);
-                self.network
-                    .remove_reserved(iter::once(peer).collect(), Protocol::Authentication);
-            }
             StreamOpened(peer, protocol) => {
                 trace!(target: "aleph-network", "StreamOpened event for peer {:?} and the protocol {:?}.", peer, protocol);
                 let rx = match &protocol {
@@ -246,7 +235,7 @@ impl<N: Network, D: Data> Service<N, D> {
 
 #[cfg(test)]
 mod tests {
-    use std::{collections::HashSet, iter, iter::FromIterator};
+    use std::collections::HashSet;
 
     use codec::Encode;
     use futures::{
@@ -262,7 +251,7 @@ mod tests {
             mock::{MockData, MockEvent, MockNetwork, MockSenderError},
             NetworkServiceIO, Protocol,
         },
-        testing::mocks::validator_network::{random_multiaddress, random_peer_id},
+        testing::mocks::validator_network::random_peer_id,
     };
 
     const PROTOCOL: Protocol = Protocol::Authentication;
@@ -309,57 +298,6 @@ mod tests {
         vec![i, i + 1, i + 2]
     }
 
-    #[tokio::test]
-    async fn test_sync_connected() {
-        let mut test_data = TestData::prepare().await;
-
-        let address = random_multiaddress();
-        test_data
-            .service
-            .handle_network_event(MockEvent::Connected(address.clone()))
-            .expect("Should handle");
-
-        let expected = (iter::once(address).collect(), PROTOCOL);
-
-        assert_eq!(
-            test_data
-                .network
-                .add_reserved
-                .next()
-                .await
-                .expect("Should receive message"),
-            expected
-        );
-
-        test_data.cleanup().await
-    }
-
-    #[tokio::test]
-    async fn test_sync_disconnected() {
-        let mut test_data = TestData::prepare().await;
-
-        let peer_id = random_peer_id();
-
-        test_data
-            .service
-            .handle_network_event(MockEvent::Disconnected(peer_id.clone()))
-            .expect("Should handle");
-
-        let expected = (iter::once(peer_id).collect(), PROTOCOL);
-
-        assert_eq!(
-            test_data
-                .network
-                .remove_reserved
-                .next()
-                .await
-                .expect("Should receive message"),
-            expected
-        );
-
-        test_data.cleanup().await
-    }
-
     #[tokio::test]
     async fn test_notification_stream_opened() {
         let mut test_data = TestData::prepare().await;
@@ -452,7 +390,7 @@ mod tests {
             .network
             .create_sender_errors
             .lock()
-            .push_back(MockSenderError::SomeError);
+            .push_back(MockSenderError);
 
         let peer_id = random_peer_id();
 
@@ -491,7 +429,7 @@ mod tests {
             .network
             .send_errors
             .lock()
-            .push_back(MockSenderError::SomeError);
+            .push_back(MockSenderError);
 
         let peer_id = random_peer_id();
 
diff --git a/finality-aleph/src/substrate_network.rs b/finality-aleph/src/substrate_network.rs
index 5ce9e126a3..0f3e0b2bae 100644
--- a/finality-aleph/src/substrate_network.rs
+++ b/finality-aleph/src/substrate_network.rs
@@ -1,12 +1,12 @@
-use std::{collections::HashSet, fmt, iter, pin::Pin, sync::Arc};
+use std::{fmt, iter, pin::Pin, sync::Arc};
 
 use async_trait::async_trait;
 use futures::stream::{Stream, StreamExt};
-use log::error;
+use log::{error, trace};
 use sc_consensus::JustificationSyncLink;
 use sc_network::{
-    multiaddr::Protocol as MultiaddressProtocol, Event as SubstrateEvent, Multiaddr,
-    NetworkService, NetworkSyncForkRequest, PeerId,
+    multiaddr::Protocol as MultiaddressProtocol, Event as SubstrateEvent, NetworkService,
+    NetworkSyncForkRequest, PeerId,
 };
 use sc_network_common::{
     protocol::ProtocolName,
@@ -122,22 +122,40 @@ impl NetworkSender for SubstrateNetworkSender {
     }
 }
 
-type NetworkEventStream = Pin<Box<dyn Stream<Item = SubstrateEvent> + Send>>;
+pub struct NetworkEventStream<B: Block, H: ExHashT> {
+    stream: Pin<Box<dyn Stream<Item = SubstrateEvent> + Send>>,
+    network: Arc<NetworkService<B, H>>,
+}
 
 #[async_trait]
-impl EventStream<Multiaddr, PeerId> for NetworkEventStream {
-    async fn next_event(&mut self) -> Option<Event<Multiaddr, PeerId>> {
+impl<B: Block, H: ExHashT> EventStream<PeerId> for NetworkEventStream<B, H> {
+    async fn next_event(&mut self) -> Option<Event<PeerId>> {
         use Event::*;
         use SubstrateEvent::*;
         loop {
-            match self.next().await {
+            match self.stream.next().await {
                 Some(event) => match event {
                     SyncConnected { remote } => {
-                        return Some(Connected(
-                            iter::once(MultiaddressProtocol::P2p(remote.into())).collect(),
-                        ))
+                        let multiaddress =
+                            iter::once(MultiaddressProtocol::P2p(remote.into())).collect();
+                        trace!(target: "aleph-network", "Connected event from address {:?}", multiaddress);
+                        if let Err(e) = self.network.add_peers_to_reserved_set(
+                            protocol_name(&Protocol::Authentication),
+                            iter::once(multiaddress).collect(),
+                        ) {
+                            error!(target: "aleph-network", "add_reserved failed: {}", e);
+                        }
+                        continue;
+                    }
+                    SyncDisconnected { remote } => {
+                        trace!(target: "aleph-network", "Disconnected event for peer {:?}", remote);
+                        let addresses = iter::once(remote).collect();
+                        self.network.remove_peers_from_reserved_set(
+                            protocol_name(&Protocol::Authentication),
+                            addresses,
+                        );
+                        continue;
                     }
-                    SyncDisconnected { remote } => return Some(Disconnected(remote)),
                     NotificationStreamOpened {
                         remote, protocol, ..
                     } => match to_protocol(protocol.as_ref()) {
@@ -177,11 +195,13 @@ impl<B: Block, H: ExHashT> Network for Arc<NetworkService<B, H>> {
     type SenderError = SenderError;
     type NetworkSender = SubstrateNetworkSender;
     type PeerId = PeerId;
-    type Multiaddress = Multiaddr;
-    type EventStream = NetworkEventStream;
+    type EventStream = NetworkEventStream<B, H>;
 
     fn event_stream(&self) -> Self::EventStream {
-        Box::pin(self.as_ref().event_stream("aleph-network"))
+        NetworkEventStream {
+            stream: Box::pin(self.as_ref().event_stream("aleph-network")),
+            network: self.clone(),
+        }
     }
 
     fn sender(
@@ -198,17 +218,4 @@ impl<B: Block, H: ExHashT> Network for Arc<NetworkService<B, H>> {
             peer_id,
         })
     }
-
-    fn add_reserved(&self, addresses: HashSet<Self::Multiaddress>, protocol: Protocol) {
-        if let Err(e) = self
-            .add_peers_to_reserved_set(protocol_name(&protocol), addresses.into_iter().collect())
-        {
-            error!(target: "aleph-network", "add_reserved failed: {}", e);
-        }
-    }
-
-    fn remove_reserved(&self, peers: HashSet<Self::PeerId>, protocol: Protocol) {
-        let addresses = peers.into_iter().collect();
-        self.remove_peers_from_reserved_set(protocol_name(&protocol), addresses);
-    }
 }