From d2d591ce0cd4d6b0dd4546626e757f3360e55711 Mon Sep 17 00:00:00 2001
From: nnposter <nnposter@e0a8ed71-7df4-0310-8962-fdc924857419>
Date: Mon, 27 Oct 2025 01:19:40 +0000
Subject: [PATCH] Avoid a crash when the IP contains a colon but no hextets

---
 nselib/ipOps.lua | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/nselib/ipOps.lua b/nselib/ipOps.lua
index 498652825..dbfd54622 100644
--- a/nselib/ipOps.lua
+++ b/nselib/ipOps.lua
@@ -381,6 +381,9 @@ expand_ip = function( ip, family )
   for hdt in string.gmatch( ip, "[%.z%x]+" ) do
     hexadectets[#hexadectets+1] = hdt
   end
+  if #hexadectets == 0 then
+    return nil, ( err4:gsub( "IPv4", "IPv6" ) )
+  end
 
   -- deal with IPv4in6 (last hexadectet only)
   local t = {}