diff --git a/src/ipc-windows.h b/src/ipc-windows.h
index 137151a..207b800 100644
--- a/src/ipc-windows.h
+++ b/src/ipc-windows.h
@@ -417,12 +417,7 @@ static int kernel_set_device(struct wgdevice *dev)
 		aip_count = 0;
 		wg_aip = (void *)wg_peer + sizeof(WG_IOCTL_PEER);
 		for_each_wgallowedip(peer, aip) {
-			if (aip->flags) {
-				//TODO: implement me
-				errno = EOPNOTSUPP;
-				goto out;
-			}
-
+			wg_aip->Flags = aip->flags;
 			wg_aip->AddressFamily = aip->family;
 			wg_aip->Cidr = aip->cidr;
 
diff --git a/src/uapi/windows/wireguard.h b/src/uapi/windows/wireguard.h
index 5c5938e..8859efb 100644
--- a/src/uapi/windows/wireguard.h
+++ b/src/uapi/windows/wireguard.h
@@ -14,6 +14,11 @@
 
 #define WG_KEY_LEN 32
 
+typedef enum
+{
+    WG_IOCTL_ALLOWED_IP_REMOVE = 1 << 0
+} WG_IOCTL_ALLOWED_IP_FLAG;
+
 typedef struct _WG_IOCTL_ALLOWED_IP
 {
 	union
@@ -21,8 +26,9 @@ typedef struct _WG_IOCTL_ALLOWED_IP
 		IN_ADDR V4;
 		IN6_ADDR V6;
 	} Address;
-		ADDRESS_FAMILY AddressFamily;
-		UCHAR Cidr;
+	ADDRESS_FAMILY AddressFamily;
+	UCHAR Cidr;
+	WG_IOCTL_ALLOWED_IP_FLAG Flags;
 } __attribute__((aligned(8))) WG_IOCTL_ALLOWED_IP;
 
 typedef enum