Add a class for fetching the qbone interface address

PiperOrigin-RevId: 363155336
Change-Id: Iec202aea44bc0d273b44402312b5ba51f1056410
diff --git a/quic/qbone/platform/netlink_interface.h b/quic/qbone/platform/netlink_interface.h
index eabfe07..0794b1d 100644
--- a/quic/qbone/platform/netlink_interface.h
+++ b/quic/qbone/platform/netlink_interface.h
@@ -5,6 +5,8 @@
 #ifndef QUICHE_QUIC_QBONE_PLATFORM_NETLINK_INTERFACE_H_
 #define QUICHE_QUIC_QBONE_PLATFORM_NETLINK_INTERFACE_H_
 
+#include <linux/rtnetlink.h>
+
 #include "quic/platform/api/quic_ip_address.h"
 #include "quic/qbone/platform/ip_range.h"