X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fplugins%2Fnat%2Fin2out_ed.c;h=2d2be5c3812332b61cb1ffdba7fa94e5b571bcdb;hb=d3b8c861a44e70c197ab721fa3ce7f38bbeab7fd;hp=733e4f0c0e5379765a9b620e2f3daea54ae23438;hpb=9fb6d40eb3d4a2da8f45187de773498b784596e6;p=vpp.git

diff --git a/src/plugins/nat/in2out_ed.c b/src/plugins/nat/in2out_ed.c
index 733e4f0c0e5..2d2be5c3812 100644
--- a/src/plugins/nat/in2out_ed.c
+++ b/src/plugins/nat/in2out_ed.c
@@ -23,6 +23,7 @@
 #include <vnet/ip/ip.h>
 #include <vnet/ethernet/ethernet.h>
 #include <vnet/fib/ip4_fib.h>
+#include <vnet/udp/udp.h>
 #include <vppinfra/error.h>
 #include <nat/nat.h>
 #include <nat/nat_ipfix_logging.h>
@@ -1005,6 +1006,18 @@ nat44_ed_in2out_node_fn_inline (vlib_main_t * vm,
 			    udp0->dst_port, thread_index, sw_if_index0,
 			    vnet_buffer (b0)->sw_if_index[VLIB_TX])))
 			goto trace00;
+
+		      /*
+		       * Send DHCP packets to the ipv4 stack, or we won't
+		       * be able to use dhcp client on the outside interface
+		       */
+		      if (PREDICT_FALSE
+			  ((b0->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED)
+			   && proto0 == SNAT_PROTOCOL_UDP
+			   && (udp0->dst_port ==
+			       clib_host_to_net_u16
+			       (UDP_DST_PORT_dhcp_to_server))))
+			goto trace00;
 		    }
 		  else
 		    {
@@ -1228,6 +1241,18 @@ nat44_ed_in2out_node_fn_inline (vlib_main_t * vm,
 			    udp1->dst_port, thread_index, sw_if_index1,
 			    vnet_buffer (b1)->sw_if_index[VLIB_TX])))
 			goto trace01;
+
+		      /*
+		       * Send DHCP packets to the ipv4 stack, or we won't
+		       * be able to use dhcp client on the outside interface
+		       */
+		      if (PREDICT_FALSE
+			  ((b1->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED)
+			   && proto1 == SNAT_PROTOCOL_UDP
+			   && (udp1->dst_port ==
+			       clib_host_to_net_u16
+			       (UDP_DST_PORT_dhcp_to_server))))
+			goto trace01;
 		    }
 		  else
 		    {
@@ -1495,6 +1520,18 @@ nat44_ed_in2out_node_fn_inline (vlib_main_t * vm,
 			    udp0->dst_port, thread_index, sw_if_index0,
 			    vnet_buffer (b0)->sw_if_index[VLIB_TX])))
 			goto trace0;
+
+		      /*
+		       * Send DHCP packets to the ipv4 stack, or we won't
+		       * be able to use dhcp client on the outside interface
+		       */
+		      if (PREDICT_FALSE
+			  ((b0->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED)
+			   && proto0 == SNAT_PROTOCOL_UDP
+			   && (udp0->dst_port ==
+			       clib_host_to_net_u16
+			       (UDP_DST_PORT_dhcp_to_server))))
+			goto trace0;
 		    }
 		  else
 		    {
@@ -1796,6 +1833,18 @@ nat44_ed_in2out_reass_node_fn_inline (vlib_main_t * vm,
 						   &fragments_to_loopback);
 			  goto trace0;
 			}
+
+		      /*
+		       * Send DHCP packets to the ipv4 stack, or we won't
+		       * be able to use dhcp client on the outside interface
+		       */
+		      if (PREDICT_FALSE
+			  ((b0->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED)
+			   && proto0 == SNAT_PROTOCOL_UDP
+			   && (udp0->dst_port ==
+			       clib_host_to_net_u16
+			       (UDP_DST_PORT_dhcp_to_server))))
+			goto trace0;
 		    }
 		  else
 		    {