wengzhe commented on code in PR #7750:
URL: https://github.com/apache/nuttx/pull/7750#discussion_r1037755691
##########
net/ipforward/ipv4_forward.c:
##########
@@ -505,6 +502,37 @@ int ipv4_forward(FAR struct net_driver_s *dev, FAR struct
ipv4_hdr_s *ipv4)
drop:
ipv4_dropstats(ipv4);
+
+#ifdef CONFIG_NET_ICMP
+#ifdef CONFIG_NET_NAT
Review Comment:
Done.
##########
net/ipforward/ipv4_forward.c:
##########
@@ -505,6 +502,37 @@ int ipv4_forward(FAR struct net_driver_s *dev, FAR struct
ipv4_hdr_s *ipv4)
drop:
ipv4_dropstats(ipv4);
+
+#ifdef CONFIG_NET_ICMP
+#ifdef CONFIG_NET_NAT
+ /* Before we reply ICMP, call NAT outbound to try to translate destination
+ * address & port back to original status.
+ */
+
+ if (ret == -ENETUNREACH || ret == -EFBIG || ret == -EMULTIHOP)
+ {
+ ipv4_nat_outbound(dev, ipv4, NAT_MANIP_DST);
+ }
+#endif /* CONFIG_NET_NAT */
Review Comment:
Done.
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