From a9974991b031fd8f84c4bcfd93f129b3938ed8c8 Mon Sep 17 00:00:00 2001
From: staphen <staphen@gmail.com>
Date: Sat, 1 Jan 2022 05:03:16 -0500
Subject: [PATCH] Add hardcoded MAC address for multicast in DevilutionX

---
 src/VirtualTap.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/VirtualTap.cpp b/src/VirtualTap.cpp
index f0b2260..a2d5e9c 100644
--- a/src/VirtualTap.cpp
+++ b/src/VirtualTap.cpp
@@ -214,6 +214,11 @@ void VirtualTap::scanMulticastGroups(std::vector<MulticastGroup>& added, std::ve
     std::vector<MulticastGroup> newGroups;
     Mutex::Lock _l(_multicastGroups_m);
     // TODO: get multicast subscriptions
+
+    // Hardcoded MAC for IPv6 multicast address
+    // ff0e:a8a9:b611:58ce:0412:fd73:3786:6fb7
+    newGroups.push_back(MulticastGroup(MAC(0x33, 0x33, 0x37, 0x86, 0x6f, 0xb7), 0));
+
     std::vector<InetAddress> allIps(ips());
     for (std::vector<InetAddress>::iterator ip(allIps.begin()); ip != allIps.end(); ++ip)
         newGroups.push_back(MulticastGroup::deriveMulticastGroupForAddressResolution(*ip));