Interpret sl3a_uport == 0 in SVP_R_VL3_ACK to indicate the VL3 IP is a
next-hop router.

@@ -72,11 +72,11 @@
         SVP_S_BADL3TYPE = 0x03, /* Unknown svp_vl3_type_t */
         SVP_S_BADBULK   = 0x04  /* Unknown svp_bulk_type_t */
 } svp_status_t;
 
 /*
- * A client issues the SVP_R_VL2_REQ whenever it needs to perform a VLS->UL3
+ * A client issues the SVP_R_VL2_REQ whenever it needs to perform a VL2->UL3
  * lookup. Requests have the following structure:
  */
 typedef struct svp_vl2_req {
         uint8_t         sl2r_mac[ETHERADDRL];
         uint8_t         sl2r_pad[2];

@@ -251,10 +251,11 @@
 /*
  * The far-remote Triton Data Center will answer with the requisite information
  * to send overlay packets to the appropriate far-remote CNs.
  */
 typedef struct svp_route_ack {
+        uint32_t        sra_status;     /* Status. */
         uint32_t        sra_dcid;       /* Far-remote Data Center ID. */
         uint32_t        sra_vnetid;     /* Far-remote vnet ID. */
         uint16_t        sra_vlan;       /* Far-remote VLAN ID. */
         uint16_t        sra_port;       /* Destination UL3 port. */
         uint8_t         sra_ip[16];     /* Destination UL3 address. */