1 files changed, 28 insertions, 0 deletions
diff --git a/contrib/epee/include/net/local_ip.h b/contrib/epee/include/net/local_ip.h
index 52c5855b9..7523f9d81 100644
--- a/contrib/epee/include/net/local_ip.h
+++ b/contrib/epee/include/net/local_ip.h
@@ -27,10 +27,38 @@
 
 #pragma once
 
+#include <string>
+#include <boost/algorithm/string/predicate.hpp>
+#include <boost/asio/ip/address_v6.hpp>
+
 namespace epee
 {
   namespace net_utils
   {
+
+    inline
+    bool is_ipv6_local(const std::string& ip)
+    {
+      auto addr = boost::asio::ip::make_address_v6(ip);
+
+      // ipv6 link-local unicast addresses are fe80::/10
+      bool is_link_local = addr.is_link_local();
+
+      auto addr_bytes = addr.to_bytes();
+
+      // ipv6 unique local unicast addresses start with fc00::/7 -- (fcXX or fdXX)
+      bool is_unique_local_unicast = (addr_bytes[0] == 0xfc || addr_bytes[0] == 0xfd);
+
+      return is_link_local || is_unique_local_unicast;
+    }
+
+    inline
+    bool is_ipv6_loopback(const std::string& ip)
+    {
+      // ipv6 loopback is ::1
+      return boost::asio::ip::address_v6::from_string(ip).is_loopback();
+    }
+
     inline
     bool is_ip_local(uint32_t ip)
     {