diff --git a/shard.lock b/shard.lock
index 9bf16b0..718c38e 100644
--- a/shard.lock
+++ b/shard.lock
@@ -4,6 +4,10 @@ shards:
     git: https://github.com/naqvis/crystar.git
     version: 0.4.0+git.commit.3975502cbe89bca528e1af4b86fbfc0f0bfacce1
 
+  ip_address_list:
+    git: https://github.com/mamantoha/ip_address_list.git
+    version: 0.1.0
+
   qr-code:
     git: https://github.com/spider-gazelle/qr-code.git
     version: 1.0.3
diff --git a/shard.yml b/shard.yml
index b5741cf..e376e9a 100644
--- a/shard.yml
+++ b/shard.yml
@@ -13,6 +13,8 @@ dependencies:
     version: ">= 0.2.0"
   qr-code:
     github: spider-gazelle/qr-code
+  ip_address_list:
+    github: mamantoha/ip_address_list
 
 targets:
   zipstream:
diff --git a/spec/zipstream/config_spec.cr b/spec/zipstream/config_spec.cr
new file mode 100644
index 0000000..509847f
--- /dev/null
+++ b/spec/zipstream/config_spec.cr
@@ -0,0 +1,11 @@
+require "../spec_helper"
+
+describe Zipstream::Config do
+  config = Zipstream::Config.new
+
+  context "host" do
+    it "should has host as local IP address" do
+      config.host.should match(/\d+\.\d+\.\d+\.\d+/)
+    end
+  end
+end
diff --git a/src/zipstream.cr b/src/zipstream.cr
index 6d68c18..04639a8 100644
--- a/src/zipstream.cr
+++ b/src/zipstream.cr
@@ -5,6 +5,7 @@ require "option_parser"
 require "crystar"
 require "zip64"
 require "qr-code"
+require "ip_address_list"
 
 require "./zipstream/**"
 
diff --git a/src/zipstream/config.cr b/src/zipstream/config.cr
index e7801a7..b4b2a33 100644
--- a/src/zipstream/config.cr
+++ b/src/zipstream/config.cr
@@ -2,7 +2,7 @@ module Zipstream
   class Config
     INSTANCE = Config.new
 
-    property host
+    setter host : String? = nil
     property port
     property? log : Bool = false
     property? web : Bool = false
@@ -21,7 +21,6 @@ module Zipstream
     property? no_banner : Bool = false
 
     def initialize
-      @host = "0.0.0.0"
       @port = 8090
       @format = "zip"
       @output = "download"
@@ -30,6 +29,10 @@ module Zipstream
       @env = "development"
     end
 
+    def host
+      @host || local_ip_address.try(&.address) || "0.0.0.0"
+    end
+
     def filename
       [output, format].join(".")
     end
@@ -53,5 +56,11 @@ module Zipstream
         str << url_path
       end
     end
+
+    def local_ip_address : Socket::IPAddress?
+      Socket.ip_address_list.find do |ip_address|
+        ip_address.family == Socket::Family::INET && ip_address.private? && !ip_address.address.starts_with?("127")
+      end
+    end
   end
 end