Add support for MAP-T CE (VPP-1058)

Change-Id: Ib99058323c50f20fcdb44185aee027c5c6ef8c91
Signed-off-by: Juraj Sloboda <jsloboda@cisco.com>
diff --git a/src/vnet/map/test.c b/src/vnet/map/test.c
index f3c893a..ff10fc9 100644
--- a/src/vnet/map/test.c
+++ b/src/vnet/map/test.c
@@ -48,7 +48,8 @@
   /* How many, and which bits to grab from the IPv4 DA */
   if (ip4_prefix_len + ea_bits_len < 32)
     {
-      d->flags |= MAP_DOMAIN_PREFIX;
+      if (!(flags & MAP_DOMAIN_TRANSLATION))
+        d->flags |= MAP_DOMAIN_PREFIX;
       d->suffix_shift = 32 - ip4_prefix_len - ea_bits_len;
       suffix_len = ea_bits_len;
     }