Error is reported with libuv test suite:

 not ok 311 - udp_multicast_interface6
 # exit code 134
 # Output from process `udp_multicast_interface6`:
 # Unknown host QEMU_IFLA type: 47
 # Unknown host QEMU_IFLA type: 48
 # Unknown host QEMU_IFLA type: 47
 # Unknown host QEMU_IFLA type: 48
 # Unknown host QEMU_IFLA type: 47
 # Unknown host QEMU_IFLA type: 48
 # Unknown host QEMU_IFLA type: 47
 # Unknown host QEMU_IFLA type: 48
 # Unknown host QEMU_IFLA type: 47
 # Unknown host QEMU_IFLA type: 48

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20180627212152.26525-2-laurent@vivier.eu>
---
 linux-user/syscall.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 2117fb13b4..4460f1e39a 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -2522,6 +2522,8 @@ static abi_long host_to_target_data_link_rtattr(struct rtattr *rtattr)
     case QEMU_IFLA_NUM_VF:
     case QEMU_IFLA_GSO_MAX_SEGS:
     case QEMU_IFLA_GSO_MAX_SIZE:
+    case QEMU_IFLA_CARRIER_UP_COUNT:
+    case QEMU_IFLA_CARRIER_DOWN_COUNT:
         u32 = RTA_DATA(rtattr);
         *u32 = tswap32(*u32);
         break;
-- 
2.17.1