From 5e9f9686e7d459d75948719cdc3125dfce67d37f Mon Sep 17 00:00:00 2001
From: Jeff Becker <jeff@i2p.rocks>
Date: Wed, 6 Oct 2021 16:21:42 -0400
Subject: [PATCH] set base v6 address to nullopt when explicit empty string is
 provided

---
 llarp/config/config.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/llarp/config/config.cpp b/llarp/config/config.cpp
index 66dabf4f8..3a2719343 100644
--- a/llarp/config/config.cpp
+++ b/llarp/config/config.cpp
@@ -569,7 +569,13 @@ namespace llarp
         IP6RangeDefault,
         [this](std::string arg) {
           if (arg.empty())
+          {
+            LogError(
+                "!!! Disabling ipv6 tunneling when you have ipv6 routes WILL lead to "
+                "de-anonymization as lokinet will no longer carry your ipv6 traffic !!!");
+            m_baseV6Address = std::nullopt;
             return;
+          }
           m_baseV6Address = huint128_t{};
           if (not m_baseV6Address->FromString(arg))
             throw std::invalid_argument(