From 6d27787a2e14a66411aed72ec38c9388b91a7e29 Mon Sep 17 00:00:00 2001
From: Adam Cooke <me@adamcooke.io>
Date: Fri, 28 Apr 2017 15:53:24 +0100
Subject: [PATCH] don't bother looking up local IPs

---
 lib/postal/worker.rb | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/postal/worker.rb b/lib/postal/worker.rb
index f6307a1..920b4ec 100644
--- a/lib/postal/worker.rb
+++ b/lib/postal/worker.rb
@@ -117,7 +117,7 @@ module Postal
           # We know this IP isn't valid. We don't need to do anything
         else
           # We need to look this up
-          if ip_address = IPAddress.where("ipv4 = ? OR ipv6 = ?", ip, ip).first
+          if !self.class.local_ip?(ip) && ip_address = IPAddress.where("ipv4 = ? OR ipv6 = ?", ip, ip).first
             @pairs[ip_address.ipv4] = ip_address.ipv6
             @ip_to_id_mapping[ip] = ip_address.id
             need = id
@@ -178,5 +178,9 @@ module Postal
       end
     end
 
+    def self.local_ip?(ip)
+      !!(ip =~ /\A(127\.|fe80:|::)/)
+    end
+
   end
 end