diff --git a/src/netaddress.cpp b/src/netaddress.cpp
--- a/src/netaddress.cpp
+++ b/src/netaddress.cpp
@@ -304,6 +304,9 @@
 }
 
 bool CNetAddr::GetIn6Addr(struct in6_addr *pipv6Addr) const {
+    if (!IsIPv6()) {
+        return false;
+    }
     memcpy(pipv6Addr, ip, 16);
     return true;
 }