--- iproute2-5.15.0/include/uapi/linux/in6.h.orig
+++ iproute2-5.15.0/include/uapi/linux/in6.h
@@ -25,6 +25,8 @@
 #include <linux/types.h>
 #include <linux/libc-compat.h>
 
+typedef uint32_t in_addr_t;
+
 /*
  *	IPv6 address structure
  */