diff --git a/aquatic_http/src/lib/common.rs b/aquatic_http/src/lib/common.rs
index c0f2549..ae1037c 100644
--- a/aquatic_http/src/lib/common.rs
+++ b/aquatic_http/src/lib/common.rs
@@ -16,6 +16,12 @@ use crate::protocol::request::Request;
 use crate::protocol::response::{Response, ResponsePeer};
 
 
+pub trait Ip: Copy + Eq + ::std::hash::Hash {}
+
+impl Ip for Ipv4Addr {}
+impl Ip for Ipv6Addr {}
+
+
 #[derive(Clone, Copy, Debug)]
 pub struct ConnectionMeta {
     /// Index of socket worker responsible for this connection. Required for
@@ -27,10 +33,10 @@ pub struct ConnectionMeta {
 
 
 #[derive(Clone, Copy, Debug)]
-pub struct PeerConnectionMeta<P> {
+pub struct PeerConnectionMeta<I: Ip> {
     pub worker_index: usize,
     pub poll_token: Token,
-    pub peer_ip_address: P,
+    pub peer_ip_address: I,
 }
 
 
@@ -63,16 +69,16 @@ impl PeerStatus {
 
 
 #[derive(Clone, Copy)]
-pub struct Peer<P> {
-    pub connection_meta: PeerConnectionMeta<P>,
+pub struct Peer<I: Ip> {
+    pub connection_meta: PeerConnectionMeta<I>,
     pub port: u16,
     pub status: PeerStatus,
     pub valid_until: ValidUntil,
 }
 
 
-impl <S: Copy>Peer<S> {
-    pub fn to_response_peer(&self) -> ResponsePeer<S> {
+impl <I: Ip>Peer<I> {
+    pub fn to_response_peer(&self) -> ResponsePeer<I> {
         ResponsePeer {
             ip_address: self.connection_meta.peer_ip_address,
             port: self.port
@@ -82,23 +88,23 @@ impl <S: Copy>Peer<S> {
 
 
 #[derive(Debug, Clone, PartialEq, Eq, Hash)]
-pub struct PeerMapKey<P: Eq + ::std::hash::Hash> {
+pub struct PeerMapKey<I: Ip> {
     pub peer_id: PeerId,
-    pub ip_or_key: Either<P, String>
+    pub ip_or_key: Either<I, String>
 }
 
 
-pub type PeerMap<P> = IndexMap<PeerMapKey<P>, Peer<P>>;
+pub type PeerMap<I> = IndexMap<PeerMapKey<I>, Peer<I>>;
 
 
-pub struct TorrentData<P: Eq + ::std::hash::Hash> {
-    pub peers: PeerMap<P>,
+pub struct TorrentData<I: Ip> {
+    pub peers: PeerMap<I>,
     pub num_seeders: usize,
     pub num_leechers: usize,
 }
 
 
-impl <P: Eq + ::std::hash::Hash> Default for TorrentData<P> {
+impl <I: Ip> Default for TorrentData<I> {
     #[inline]
     fn default() -> Self {
         Self {
@@ -110,7 +116,7 @@ impl <P: Eq + ::std::hash::Hash> Default for TorrentData<P> {
 }
 
 
-pub type TorrentMap<P> = HashMap<InfoHash, TorrentData<P>>;
+pub type TorrentMap<I> = HashMap<InfoHash, TorrentData<I>>;
 
 
 #[derive(Default)]
diff --git a/aquatic_http/src/lib/handler.rs b/aquatic_http/src/lib/handler.rs
index caff517..be18a72 100644
--- a/aquatic_http/src/lib/handler.rs
+++ b/aquatic_http/src/lib/handler.rs
@@ -170,14 +170,14 @@ pub fn handle_announce_requests(
 
 
 /// Insert/update peer. Return num_seeders, num_leechers and response peers
-fn upsert_peer_and_get_response_peers<P: Copy + Eq + ::std::hash::Hash>(
+fn upsert_peer_and_get_response_peers<I: Ip>(
     config: &Config,
     rng: &mut impl Rng,
-    request_sender_meta: PeerConnectionMeta<P>,
-    torrent_data: &mut TorrentData<P>,
+    request_sender_meta: PeerConnectionMeta<I>,
+    torrent_data: &mut TorrentData<I>,
     request: AnnounceRequest,
     valid_until: ValidUntil,
-) -> (usize, usize, Vec<ResponsePeer<P>>) {
+) -> (usize, usize, Vec<ResponsePeer<I>>) {
     // Insert/update/remove peer who sent this request
     {
         let peer_status = PeerStatus::from_event_and_bytes_left(
@@ -235,7 +235,7 @@ fn upsert_peer_and_get_response_peers<P: Copy + Eq + ::std::hash::Hash>(
         Some(numwant) => numwant.min(config.protocol.max_peers),
     };
 
-    let response_peers: Vec<ResponsePeer<P>> = extract_response_peers(
+    let response_peers: Vec<ResponsePeer<I>> = extract_response_peers(
         rng,
         &torrent_data.peers,
         max_num_peers_to_take,
diff --git a/aquatic_http/src/lib/tasks.rs b/aquatic_http/src/lib/tasks.rs
index ad901dc..6c04be6 100644
--- a/aquatic_http/src/lib/tasks.rs
+++ b/aquatic_http/src/lib/tasks.rs
@@ -12,7 +12,7 @@ pub fn clean_torrents(state: &State){
 }
 
 
-fn clean_torrent_map<I: Eq + ::std::hash::Hash>(
+fn clean_torrent_map<I: Ip>(
     torrent_map: &mut TorrentMap<I>,
 ){
     let now = Instant::now();