From 8603a075049a9e903b05e2370cf4c5ebfda1e703 Mon Sep 17 00:00:00 2001
From: Claire <claire.github-309c@sitedethib.com>
Date: Mon, 21 Feb 2022 14:55:38 +0100
Subject: [PATCH] Fix error when trying to register (#17600)

---
 config/initializers/rack_attack.rb | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/config/initializers/rack_attack.rb b/config/initializers/rack_attack.rb
index a1fea7712d..c3733e377f 100644
--- a/config/initializers/rack_attack.rb
+++ b/config/initializers/rack_attack.rb
@@ -83,11 +83,10 @@ class Rack::Attack
 
   throttle('throttle_sign_up_attempts/ip', limit: 25, period: 5.minutes) do |req|
     if req.post? && req.path == '/auth'
-      if req.remote_ip.ipv6?
-        req.remote_ip.mask(64)
-      else
-        req.remote_ip
-      end
+      addr = req.remote_ip
+      addr = IPAddr.new(addr) if addr.is_a?(String)
+      addr = addr.mask(64) if addr.ipv6?
+      addr.to_s
     end
   end