diff --git a/Steepfile b/Steepfile
index 866b51f1..ffc382f1 100644
--- a/Steepfile
+++ b/Steepfile
@@ -6,6 +6,7 @@ target :lib do
 
   # Standard libraries used in the project
   library(
-    'forwardable'
+    'forwardable',
+    'ipaddr'
   )
 end
diff --git a/lib/appium_lib_core/driver.rb b/lib/appium_lib_core/driver.rb
index 9c693fdc..246e7172 100644
--- a/lib/appium_lib_core/driver.rb
+++ b/lib/appium_lib_core/driver.rb
@@ -134,7 +134,7 @@ def resolve_addresses(host)
         return [normalized_host] if ip_literal?(normalized_host)
 
         Timeout.timeout(DNS_RESOLVE_TIMEOUT_SECONDS) do
-          Socket.getaddrinfo(normalized_host, nil).map { |entry| entry[3] }.uniq
+          Socket.getaddrinfo(normalized_host, nil).map { |entry| entry[3].to_s }.uniq
         end
       rescue Timeout::Error
         ::Appium::Logger.warn("DNS resolution for '#{host}' timed out after #{DNS_RESOLVE_TIMEOUT_SECONDS}s")
diff --git a/sig/lib/appium_lib_core/driver.rbs b/sig/lib/appium_lib_core/driver.rbs
index 94c341b7..d8504a69 100644
--- a/sig/lib/appium_lib_core/driver.rbs
+++ b/sig/lib/appium_lib_core/driver.rbs
@@ -70,6 +70,18 @@ module Appium
 
       W3C_KEYS: Hash[String | Symbol, String]
 
+      DNS_RESOLVE_TIMEOUT_SECONDS: Integer
+
+      LOOPBACK_RANGES: Array[IPAddr]
+
+      LINK_LOCAL_RANGES: Array[IPAddr]
+
+      UNSPECIFIED_RANGES: Array[IPAddr]
+
+      MULTICAST_RANGES: Array[IPAddr]
+
+      DISALLOWED_RANGES: Array[IPAddr]
+
       attr_reader protocol: String
 
       attr_reader host: String