Auto linking of IP addresses requires a scheme has been provided

lib/linkify/parser.ex

@@ -237,7 +237,7 @@ defmodule Linkify.Parser do
       opts[:validate_tld] == false ->
         true
 
-      ip?(host) ->
+      scheme != "" && ip?(host) ->
         true
 
       # don't validate if scheme is present

test/linkify_test.exs

@@ -761,10 +761,14 @@ defmodule LinkifyTest do
       assert Linkify.link(text) == expected
     end
 
-    test "IPv4 is linked" do
+    test "IPv4 is linked only with scheme" do
       text = "1.1.1.1"
 
-      expected = "<a href=\"http://1.1.1.1\">1.1.1.1</a>"
+      assert Linkify.link(text) == text
+
+      text = "http://1.1.1.1"
+
+      expected = "<a href=\"http://1.1.1.1\">http://1.1.1.1</a>"
 
       assert Linkify.link(text) == expected
     end

test/parser_test.exs

@@ -275,9 +275,7 @@ defmodule Linkify.ParserTest do
       "example.com",
       "example.ca",
       "example.tv",
-      "example.com:999?one=one",
-      "255.255.255.255",
-      "255.255.255.255:3000?one=1&two=2"
+      "example.com:999?one=one"
     ]
 
   def invalid_non_scheme_urls,
@@ -285,7 +283,9 @@ defmodule Linkify.ParserTest do
       "invalid.com/perl.cgi?key= | web-site.com/cgi-bin/perl.cgi?key1=value1&key2",
       "invalid.",
       "hi..there",
-      "555.555.5555"
+      "555.555.5555",
+      "255.255.255.255",
+      "255.255.255.255:3000?one=1&two=2"
     ]
 
   def custom_tld_scheme_urls,