diff --git a/lib/sparoid.rb b/lib/sparoid.rb
index de233a0..d1b6bb5 100644
--- a/lib/sparoid.rb
+++ b/lib/sparoid.rb
@@ -155,10 +155,12 @@ def public_ip(host = "checkip.amazonaws.com")
       sock.print "GET / HTTP/1.1\r\nHost: #{host}\r\nConnection: close\r\n\r\n"
       status = sock.readline(chomp: true)
       raise ResolvError.new("#{host} response: #{status}") unless status.start_with? "HTTP/1.1 200 "
-      until sock.readline(chomp: true).empty? 
+
+      until sock.readline(chomp: true).empty?
         # skip all headers
       end
-      sock.readline(chomp: true) # this is the IP
+      ip = sock.readline(chomp: true) # this is the IP
+      Resolv::IPv4.create ip
     end
   end
 
diff --git a/test/sparoid_test.rb b/test/sparoid_test.rb
index 72f282b..5d64484 100644
--- a/test/sparoid_test.rb
+++ b/test/sparoid_test.rb
@@ -62,25 +62,32 @@ def test_it_sends_message_with_empty_cache_file
   end
 
   def test_it_resolves_public_ip_only_once_per_instance
-    dns = Minitest::Mock.new
-    dns.expect :getresource, Resolv::IPv4.create("1.1.1.1"), ["myip.opendns.com", Resolv::DNS::Resource::IN::A]
-    Resolv::DNS.stub(:open, ->(_, &blk) { blk.call dns }) do
+    sock = Minitest::Mock.new
+    sock = Minitest::Mock.new
+    sock.expect :sync=, nil, [true]
+    sock.expect :print, nil, ["GET / HTTP/1.1\r\nHost: checkip.amazonaws.com\r\nConnection: close\r\n\r\n"]
+    sock.expect :readline, "HTTP/1.1 200 ", [], chomp: true
+    sock.expect :readline, "", [], chomp: true
+    sock.expect :readline, "1.1.1.1", [], chomp: true
+    Socket.stub(:tcp, ->(_host, _port, **_opts, &blk) { blk.call(sock) }) do
       s = Sparoid::Instance.new
       2.times do
         s.send(:public_ip)
       end
     end
-    dns.verify
+
+    sock.verify
   end
 
   def test_it_raises_resolve_error_on_dns_socket_error
     key = "0000000000000000000000000000000000000000000000000000000000000000"
     hmac_key = "0000000000000000000000000000000000000000000000000000000000000000"
+    open_for_ip = Resolv::IPv4.create("1.1.1.1")
     error = ->(*_) { raise SocketError, "getaddrinfo: Name or service not known" }
 
     Addrinfo.stub(:getaddrinfo, error) do
       assert_raises(Sparoid::ResolvError) do
-        Sparoid::Instance.new.auth(key, hmac_key, "127.0.0.1", 1337)
+        Sparoid::Instance.new.auth(key, hmac_key, "127.0.0.1", 1337, open_for_ip: )
       end
     end
   end