1 files changed, 5 insertions, 0 deletions
diff --git a/src/netbase.cpp b/src/netbase.cpp
index e3cb4e706f..b7c77fda6b 100644
--- a/src/netbase.cpp
+++ b/src/netbase.cpp
@@ -1330,6 +1330,11 @@ bool operator!=(const CSubNet& a, const CSubNet& b)
     return !(a==b);
 }
 
+bool operator<(const CSubNet& a, const CSubNet& b)
+{
+    return (a.network < b.network || (a.network == b.network && memcmp(a.netmask, b.netmask, 16)));
+}
+
 #ifdef WIN32
 std::string NetworkErrorString(int err)
 {