diff --git a/sdk_container/src/third_party/coreos-overlay/coreos-base/common-oem-files/files/stackit/grub.cfg.frag b/sdk_container/src/third_party/coreos-overlay/coreos-base/common-oem-files/files/stackit/grub.cfg.frag
new file mode 100644
index 00000000000..95917bd75ac
--- /dev/null
+++ b/sdk_container/src/third_party/coreos-overlay/coreos-base/common-oem-files/files/stackit/grub.cfg.frag
@@ -0,0 +1,4 @@
+# STACKIT logs by default to the serial console, map ttyS0 also to the system console.
+if [ "$grub_cpu" = x86_64 ]; then
+  set linux_console="console=tty0 console=ttyS0,115200n8"
+fi