diff --git a/lib/http/rpc.js b/lib/http/rpc.js
index e1b5d457..82736f25 100644
--- a/lib/http/rpc.js
+++ b/lib/http/rpc.js
@@ -439,7 +439,7 @@ RPC.prototype.disconnectnode = co(function* disconnectnode(args) {
 
 RPC.prototype.getaddednodeinfo = co(function* getaddednodeinfo(args) {
   var out = [];
-  var i, host, addr, peer, peers;
+  var host, addr, peer;
 
   if (args.help || args.length < 1 || args.length > 2)
     throw new RPCError('getaddednodeinfo dummy ( "node" )');
@@ -536,6 +536,8 @@ RPC.prototype.getpeerinfo = co(function* getpeerinfo(args) {
 });
 
 RPC.prototype.ping = co(function* ping(args) {
+  var peer;
+
   if (args.help || args.length !== 0)
     throw new RPCError('ping');
 
diff --git a/lib/net/peer.js b/lib/net/peer.js
index b3fd95bd..19c65d20 100644
--- a/lib/net/peer.js
+++ b/lib/net/peer.js
@@ -15,7 +15,6 @@ var co = require('../utils/co');
 var Parser = require('./parser');
 var Framer = require('./framer');
 var packets = require('./packets');
-var NetworkAddress = require('../primitives/netaddress');
 var constants = require('../protocol/constants');
 var InvItem = require('../primitives/invitem');
 var Locker = require('../utils/locker');
@@ -27,9 +26,9 @@ var Block = require('../primitives/block');
 var TX = require('../primitives/tx');
 var errors = require('../btc/errors');
 var List = require('../utils/list');
+var IP = require('../utils/ip');
 var packetTypes = packets.types;
 var VerifyResult = errors.VerifyResult;
-var IP = require('../utils/ip');
 
 /**
  * Represents a remote peer.
@@ -821,7 +820,7 @@ Peer.prototype.sendFeeRate = function sendFeeRate(rate) {
  */
 
 Peer.prototype.destroy = function destroy() {
-  var i, j, keys, cmd, queue, entry, hash;
+  var i, keys, cmd, queue, entry, hash;
 
   if (this.destroyed)
     return;
@@ -900,8 +899,6 @@ Peer.prototype.write = function write(data) {
  */
 
 Peer.prototype.needsDrain = function needsDrain(size) {
-  var self = this;
-
   if (this.maybeStall()) {
     this.destroy();
     this.error('Peer stalled (drain).');
@@ -994,9 +991,6 @@ Peer.prototype.error = function error(err) {
     for (i = 0; i < args.length; i++)
       args[i] = arguments[i];
 
-    if (typeof args[args.length - 1] === 'boolean')
-      keep = args.pop();
-
     msg = util.fmt.apply(util, args);
     err = new Error(msg);
   }
@@ -1986,7 +1980,7 @@ Peer.prototype.handlePong = co(function* handlePong(packet) {
 
 Peer.prototype.handleGetAddr = co(function* handleGetAddr(packet) {
   var items = [];
-  var i, addr;
+  var addr;
 
   if (this.options.selfish)
     return;
@@ -2769,14 +2763,6 @@ RequestEntry.prototype.stop = function stop() {
   }
 };
 
-/*
- * Helpers
- */
-
-function compare(a, b) {
-  return a.id - b.id;
-}
-
 /*
  * Expose
  */
diff --git a/lib/net/pool.js b/lib/net/pool.js
index fee56399..6ba6913e 100644
--- a/lib/net/pool.js
+++ b/lib/net/pool.js
@@ -24,13 +24,12 @@ var InvItem = require('../primitives/invitem');
 var Locker = require('../utils/locker');
 var Network = require('../protocol/network');
 var Peer = require('./peer');
-var TX = require('../primitives/tx');
-var tcp = require('./tcp');
 var request = require('../http/request');
+var List = require('../utils/list');
+var tcp = require('./tcp');
+var dns = require('./dns');
 var VerifyError = errors.VerifyError;
 var VerifyResult = errors.VerifyResult;
-var List = require('../utils/list');
-var dns = require('./dns');
 
 /**
  * A pool of peers for handling all network activity.
@@ -1066,7 +1065,6 @@ Pool.prototype.sendAlert = function sendAlert(alert) {
  */
 
 Pool.prototype.createPeer = function createPeer(port, host) {
-  var self = this;
   var peer = new Peer(this);
 
   this.bindPeer(peer);
@@ -1085,7 +1083,6 @@ Pool.prototype.createPeer = function createPeer(port, host) {
  */
 
 Pool.prototype.acceptPeer = function acceptPeer(socket) {
-  var self = this;
   var peer = new Peer(this);
 
   this.bindPeer(peer);
@@ -2627,14 +2624,6 @@ BroadcastItem.prototype.inspect = function inspect() {
     + '>';
 };
 
-/*
- * Helpers
- */
-
-function compare(a, b) {
-  return a.id - b.id;
-}
-
 /*
  * Expose
  */
diff --git a/lib/net/proxysocket.js b/lib/net/proxysocket.js
index 24189ae0..9330e9cb 100644
--- a/lib/net/proxysocket.js
+++ b/lib/net/proxysocket.js
@@ -6,7 +6,6 @@ var BufferWriter = require('../utils/writer');
 var assert = require('assert');
 var EventEmitter = require('events').EventEmitter;
 var IOClient = require('socket.io-client');
-var IP = require('../utils/ip');
 
 function ProxySocket(uri) {
   if (!(this instanceof ProxySocket))
diff --git a/lib/utils/ip.js b/lib/utils/ip.js
index 21b58220..2d0d79f9 100644
--- a/lib/utils/ip.js
+++ b/lib/utils/ip.js
@@ -60,7 +60,7 @@ exports.parseHost = function parseHost(addr, fallback) {
  */
 
 exports.hostname = function hostname(host, port) {
-  var version
+  var version;
 
   assert(typeof host === 'string');
   assert(host.length > 0);
@@ -176,10 +176,6 @@ exports.toString = function toString(ip) {
  */
 
 exports.normalize = function normalize(ip) {
-  if (Buffer.isBuffer(ip)) {
-    assert(ip.length === 16);
-    return exports.toString(ip);
-  }
   return exports.toString(exports.toBuffer(ip));
 };