From fac7dc9c913a94550692c31ca6c24fa4db5b5b52 Mon Sep 17 00:00:00 2001
From: Adam Ierymenko <adam.ierymenko@gmail.com>
Date: Wed, 25 Oct 2017 16:01:36 -0700
Subject: Stop duplciate IPv6 addresses due to privacy mode IPs.

---
 node/InetAddress.hpp | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'node/InetAddress.hpp')

diff --git a/node/InetAddress.hpp b/node/InetAddress.hpp
index 79bf76ad..c1ea6c13 100644
--- a/node/InetAddress.hpp
+++ b/node/InetAddress.hpp
@@ -405,6 +405,26 @@ struct InetAddress : public sockaddr_storage
 		return false;
 	}
 
+	/**
+	 * Performs an IP-only comparison or, if that is impossible, a memcmp()
+	 *
+	 * This version compares only the first 64 bits of IPv6 addresses.
+	 *
+	 * @param a InetAddress to compare again
+	 * @return True if only IP portions are equal (false for non-IP or null addresses)
+	 */
+	inline bool ipsEqual2(const InetAddress &a) const
+	{
+		if (ss_family == a.ss_family) {
+			if (ss_family == AF_INET)
+				return (reinterpret_cast<const struct sockaddr_in *>(this)->sin_addr.s_addr == reinterpret_cast<const struct sockaddr_in *>(&a)->sin_addr.s_addr);
+			if (ss_family == AF_INET6)
+				return (memcmp(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr,reinterpret_cast<const struct sockaddr_in6 *>(&a)->sin6_addr.s6_addr,8) == 0);
+			return (memcmp(this,&a,sizeof(InetAddress)) == 0);
+		}
+		return false;
+	}
+
 	inline unsigned long hashCode() const
 	{
 		if (ss_family == AF_INET) {
-- 
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