From 584ab18fe1eb4b42c7be9a4e8c05f9c474515d3a Mon Sep 17 00:00:00 2001
From: Ross Kaffenberger <rosskaff@gmail.com>
Date: Sun, 9 Mar 2025 23:11:23 -0400
Subject: [PATCH] Add missing signature for IPAddr#netmask

---
 stdlib/ipaddr/0/ipaddr.rbs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/stdlib/ipaddr/0/ipaddr.rbs b/stdlib/ipaddr/0/ipaddr.rbs
index 600c53524..49f606431 100644
--- a/stdlib/ipaddr/0/ipaddr.rbs
+++ b/stdlib/ipaddr/0/ipaddr.rbs
@@ -276,6 +276,14 @@ class IPAddr
   #
   def native: () -> IPAddr
 
+  # <!--
+  #   rdoc-file=lib/ipaddr.rb
+  #   - netmask()
+  # -->
+  # Returns the netmask in string format e.g. 255.255.0.0
+  #
+  def netmask: () -> String
+
   # <!--
   #   rdoc-file=lib/ipaddr.rb
   #   - prefix()