diff --git a/buildroot-external/rootfs-overlay/usr/lib/sysctl.d/60-otbr-ip-forward.conf b/buildroot-external/rootfs-overlay/usr/lib/sysctl.d/60-otbr-ip-forward.conf
deleted file mode 100644
index ebddeaa66..000000000
--- a/buildroot-external/rootfs-overlay/usr/lib/sysctl.d/60-otbr-ip-forward.conf
+++ /dev/null
@@ -1 +0,0 @@
-net.ipv6.conf.all.forwarding = 1