diff --git a/beacon_node/client/Cargo.toml b/beacon_node/client/Cargo.toml
index 04f80e76b..46394ac91 100644
--- a/beacon_node/client/Cargo.toml
+++ b/beacon_node/client/Cargo.toml
@@ -7,6 +7,7 @@ edition = "2018"
 [dependencies]
 beacon_chain = { path = "../beacon_chain" }
 network = { path = "../network" }
+libp2p = { path = "../libp2p" }
 sync = { path = "../sync" }
 db = { path = "../db" }
 fork_choice = { path = "../../eth2/fork_choice" }
diff --git a/beacon_node/client/src/client_config.rs b/beacon_node/client/src/client_config.rs
index 3f5fbab2f..18b39277a 100644
--- a/beacon_node/client/src/client_config.rs
+++ b/beacon_node/client/src/client_config.rs
@@ -1,10 +1,12 @@
 use clap::ArgMatches;
 use db::DBType;
 use fork_choice::ForkChoiceAlgorithm;
+use libp2p::multiaddr::ToMultiaddr;
 use network::NetworkConfig;
 use slog::error;
 use std::fs;
 use std::net::IpAddr;
+use std::net::SocketAddr;
 use std::path::PathBuf;
 use types::ChainSpec;
 
@@ -52,16 +54,6 @@ impl ClientConfig {
 
         // Network related args
 
-        // Custom listening address ipv4/ipv6
-        // TODO: Handle list of addresses
-        if let Some(listen_address_str) = args.value_of("listen_address") {
-            if let Ok(listen_address) = listen_address_str.parse::<IpAddr>() {
-                config.net_conf.listen_addresses = vec![listen_address];
-            } else {
-                error!(log, "Invalid IP Address"; "Address" => listen_address_str);
-                return Err("Invalid IP Address");
-            }
-        }
         // Custom p2p listen port
         if let Some(port_str) = args.value_of("port") {
             if let Ok(port) = port_str.parse::<u16>() {
@@ -71,6 +63,19 @@ impl ClientConfig {
                 return Err("Invalid port");
             }
         }
+        // Custom listening address ipv4/ipv6
+        // TODO: Handle list of addresses
+        if let Some(listen_address_str) = args.value_of("listen_address") {
+            if let Ok(listen_address) = listen_address_str.parse::<IpAddr>() {
+                let multiaddr = SocketAddr::new(listen_address, config.net_conf.listen_port)
+                    .to_multiaddr()
+                    .expect("Invalid listen address format");
+                config.net_conf.listen_addresses = vec![multiaddr];
+            } else {
+                error!(log, "Invalid IP Address"; "Address" => listen_address_str);
+                return Err("Invalid IP Address");
+            }
+        }
 
         // filesystem args
 
diff --git a/beacon_node/libp2p/Cargo.toml b/beacon_node/libp2p/Cargo.toml
index 9c4c6e7a5..d78ddd882 100644
--- a/beacon_node/libp2p/Cargo.toml
+++ b/beacon_node/libp2p/Cargo.toml
@@ -11,3 +11,4 @@ slog = "2.4.1"
 version = { path = "../version" }
 tokio = "0.1.16"
 futures = "0.1.25"
+parity-multiaddr = "0.2.0"
diff --git a/beacon_node/libp2p/src/lib.rs b/beacon_node/libp2p/src/lib.rs
index 01dc42073..1a24165ba 100644
--- a/beacon_node/libp2p/src/lib.rs
+++ b/beacon_node/libp2p/src/lib.rs
@@ -6,6 +6,8 @@ mod behaviour;
 mod network_config;
 mod service;
 
+pub use libp2p::multiaddr;
+pub use libp2p::Multiaddr;
 pub use libp2p::{
     gossipsub::{GossipsubConfig, GossipsubConfigBuilder},
     PeerId,
diff --git a/beacon_node/libp2p/src/network_config.rs b/beacon_node/libp2p/src/network_config.rs
index 7cb1cf6bb..8eeb33861 100644
--- a/beacon_node/libp2p/src/network_config.rs
+++ b/beacon_node/libp2p/src/network_config.rs
@@ -1,20 +1,20 @@
 use libp2p::gossipsub::{GossipsubConfig, GossipsubConfigBuilder};
 use libp2p::secio;
+use libp2p::Multiaddr;
 use std::fmt;
-use std::net::IpAddr;
 
 #[derive(Clone)]
 /// Network configuration for lighthouse.
 pub struct NetworkConfig {
     //TODO: stubbing networking initial params, change in the future
     /// IP address to listen on.
-    pub listen_addresses: Vec<IpAddr>,
+    pub listen_addresses: Vec<Multiaddr>,
     /// Listen port UDP/TCP.
     pub listen_port: u16,
     /// Gossipsub configuration parameters.
     pub gs_config: GossipsubConfig,
     /// List of nodes to initially connect to.
-    pub boot_nodes: Vec<IpAddr>,
+    pub boot_nodes: Vec<Multiaddr>,
     /// Peer key related to this nodes PeerId.
     pub local_private_key: secio::SecioKeyPair,
     /// Client version
@@ -24,21 +24,15 @@ pub struct NetworkConfig {
 impl Default for NetworkConfig {
     /// Generate a default network configuration.
     fn default() -> Self {
-        // hard-coded defaults
-        let bootnodes = ["127.0.0.1"];
-        let default_port = 9000;
-
         // TODO: Currently using ed25519 key pairs. Wire protocol specifies RSA. Waiting for this
         // PR to be merged to generate RSA keys: https://github.com/briansmith/ring/pull/733
-
         NetworkConfig {
-            listen_addresses: vec!["127.0.0.1".parse().expect("correct IP address")],
-            listen_port: default_port,
+            listen_addresses: vec!["/ip4/127.0.0.1/tcp/9000"
+                .parse()
+                .expect("is a correct multi-address")],
+            listen_port: 9000,
             gs_config: GossipsubConfigBuilder::new().build(),
-            boot_nodes: bootnodes
-                .iter()
-                .map(|s| s.parse().expect("Bootnodes must be IP addresses"))
-                .collect(),
+            boot_nodes: Vec::new(),
             local_private_key: secio::SecioKeyPair::ed25519_generated().unwrap(),
             client_version: version::version(),
         }
diff --git a/beacon_node/libp2p/src/service.rs b/beacon_node/libp2p/src/service.rs
index 7ed715bd6..8e1670701 100644
--- a/beacon_node/libp2p/src/service.rs
+++ b/beacon_node/libp2p/src/service.rs
@@ -5,12 +5,12 @@ use libp2p::core::{
     muxing::StreamMuxerBox,
     nodes::Substream,
     transport::boxed::Boxed,
-    upgrade::{InboundUpgrade, InboundUpgradeExt, OutboundUpgrade, OutboundUpgradeExt},
+    upgrade::{InboundUpgradeExt, OutboundUpgradeExt},
 };
-use libp2p::{build_tcp_ws_secio_mplex_yamux, core, secio, Transport};
+use libp2p::multiaddr::Protocol;
+use libp2p::{core, secio, Transport};
 use libp2p::{PeerId, Swarm};
-use slog::debug;
-use std::error;
+use slog::{debug, info, warn};
 use std::io::{Error, ErrorKind};
 use std::time::Duration;
 
@@ -21,9 +21,6 @@ pub struct Service {
     /// This node's PeerId.
     local_peer_id: PeerId,
 }
-//Swarm<impl std::clone::Clone+libp2p_core::transport::Transport, behaviour::Behaviour<libp2p_core::muxing::SubstreamRef<std::sync::Arc<impl std::marker::Send+std::marker::Sync+libp2p_core::muxing::StreamMuxer>>>>
-
-//swarm: Swarm<Boxed<(PeerId, StreamMuxerBox), IoError>, Behaviour<TMessage, Substream<StreamMuxerBox>>>,
 
 impl Service {
     pub fn new(config: NetworkConfig, log: slog::Logger) -> Self {
@@ -33,14 +30,37 @@ impl Service {
         let local_peer_id = local_private_key.to_peer_id();
         debug!(log, "Local peer id: {:?}", local_peer_id);
 
-        // Set up the transport
-        let transport = build_transport(local_private_key);
-        // Set up gossipsub routing
-        let behaviour = Behaviour::new(local_peer_id.clone(), config.gs_config);
-        // Set up Topology
-        let topology = local_peer_id.clone();
+        let mut swarm = {
+            // Set up the transport
+            let transport = build_transport(local_private_key);
+            // Set up gossipsub routing
+            let behaviour = Behaviour::new(local_peer_id.clone(), config.gs_config);
+            // Set up Topology
+            let topology = local_peer_id.clone();
+            Swarm::new(transport, behaviour, topology)
+        };
 
-        let swarm = Swarm::new(transport, behaviour, topology);
+        // listen on all addresses
+        for address in &config.listen_addresses {
+            match Swarm::listen_on(&mut swarm, address.clone()) {
+                Ok(mut listen_addr) => {
+                    listen_addr.append(Protocol::P2p(local_peer_id.clone().into()));
+                    info!(log, "Listening on: {}", listen_addr);
+                }
+                Err(err) => warn!(log, "Cannot listen on: {} : {:?}", address, err),
+            };
+        }
+        // connect to boot nodes - these are currently stored as multiadders
+        // Once we have discovery, can set to peerId
+        for bootnode in config.boot_nodes {
+            match Swarm::dial_addr(&mut swarm, bootnode.clone()) {
+                Ok(()) => debug!(log, "Dialing bootnode: {}", bootnode),
+                Err(err) => debug!(
+                    log,
+                    "Could not connect to bootnode: {} error: {:?}", bootnode, err
+                ),
+            };
+        }
 
         Service {
             local_peer_id,