From c540135705b2621fd83f7b99771920691d4b4c9b Mon Sep 17 00:00:00 2001
From: Martin Preuss <martin@aquamaniac.de>
Date: Sun, 6 Jul 2025 14:37:10 +0200
Subject: [PATCH] fixed a bug.

---
 avr/modules/network/iface.asm | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/avr/modules/network/iface.asm b/avr/modules/network/iface.asm
index 06f9a20..b0174f9 100644
--- a/avr/modules/network/iface.asm
+++ b/avr/modules/network/iface.asm
@@ -188,9 +188,9 @@ NET_Interface_IncCounter16_end:
 
 NET_Interface_SetIfaceNumInBuffer:
   ldd r16, Y+NET_IFACE_OFFS_IFACENUM
-  andi r16, (NET_IFACE_BUFFER_IFACENUM1_BIT | NET_IFACE_BUFFER_IFACENUM0_BIT)
+  andi r16, (1<<NET_IFACE_BUFFER_IFACENUM1_BIT) | (1<<NET_IFACE_BUFFER_IFACENUM0_BIT)
   ld r17, X
-  andi r17, ~(NET_IFACE_BUFFER_IFACENUM1_BIT | NET_IFACE_BUFFER_IFACENUM0_BIT)
+  cbr r17, (1<<NET_IFACE_BUFFER_IFACENUM1_BIT) | (1<<NET_IFACE_BUFFER_IFACENUM0_BIT)
   or r17, r16
   st X, r17
   ret