--- a/r8101_n.c
+++ b/r8101_n.c
@@ -69,6 +69,10 @@ This driver is modified from r8169.c in Linux kernel 2.6.18
 #include <linux/mdio.h>
 #endif
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(6,6,0)
+# include <net/gso.h>
+#endif
+
 #include <asm/io.h>
 #include <asm/irq.h>