diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 9effbb316a..c0840107c9 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -2693,12 +2693,17 @@ static abi_long host_to_target_data_addr_rtattr(struct rtattr *rtattr)
 static abi_long host_to_target_data_route_rtattr(struct rtattr *rtattr)
 {
     uint32_t *u32;
+    struct rta_cacheinfo *ci;
+
     switch (rtattr->rta_type) {
     /* binary: depends on family type */
     case QEMU_RTA_GATEWAY:
     case QEMU_RTA_DST:
     case QEMU_RTA_PREFSRC:
         break;
+    /* u8 */
+    case QEMU_RTA_PREF:
+        break;
     /* u32 */
     case QEMU_RTA_PRIORITY:
     case QEMU_RTA_TABLE:
@@ -2706,6 +2711,20 @@ static abi_long host_to_target_data_route_rtattr(struct rtattr *rtattr)
         u32 = RTA_DATA(rtattr);
         *u32 = tswap32(*u32);
         break;
+    /* struct rta_cacheinfo */
+    case QEMU_RTA_CACHEINFO:
+        ci = RTA_DATA(rtattr);
+        ci->rta_clntref = tswap32(ci->rta_clntref);
+        ci->rta_lastuse = tswap32(ci->rta_lastuse);
+        ci->rta_expires = tswap32(ci->rta_expires);
+        ci->rta_error = tswap32(ci->rta_error);
+        ci->rta_used = tswap32(ci->rta_used);
+#if defined(RTNETLINK_HAVE_PEERINFO)
+        ci->rta_id = tswap32(ci->rta_id);
+        ci->rta_ts = tswap32(ci->rta_ts);
+        ci->rta_tsage = tswap32(ci->rta_tsage);
+#endif
+        break;
     default:
         gemu_log("Unknown host RTA type: %d\n", rtattr->rta_type);
         break;