Stream: UDP proxy.
diff --git a/auto/unix b/auto/unix
index ce01791..16d9523 100755
--- a/auto/unix
+++ b/auto/unix
@@ -329,6 +329,45 @@
. auto/feature
+# BSD way to get IPv4 datagram destination address
+
+ngx_feature="IP_RECVDSTADDR"
+ngx_feature_name="NGX_HAVE_IP_RECVDSTADDR"
+ngx_feature_run=no
+ngx_feature_incs="#include <sys/socket.h>
+ #include <netinet/in.h>"
+ngx_feature_path=
+ngx_feature_libs=
+ngx_feature_test="setsockopt(0, IPPROTO_IP, IP_RECVDSTADDR, NULL, 0)"
+. auto/feature
+
+
+# Linux way to get IPv4 datagram destination address
+
+ngx_feature="IP_PKTINFO"
+ngx_feature_name="NGX_HAVE_IP_PKTINFO"
+ngx_feature_run=no
+ngx_feature_incs="#include <sys/socket.h>
+ #include <netinet/in.h>"
+ngx_feature_path=
+ngx_feature_libs=
+ngx_feature_test="setsockopt(0, IPPROTO_IP, IP_PKTINFO, NULL, 0)"
+. auto/feature
+
+
+# RFC 3542 way to get IPv6 datagram destination address
+
+ngx_feature="IPV6_RECVPKTINFO"
+ngx_feature_name="NGX_HAVE_IPV6_RECVPKTINFO"
+ngx_feature_run=no
+ngx_feature_incs="#include <sys/socket.h>
+ #include <netinet/in.h>"
+ngx_feature_path=
+ngx_feature_libs=
+ngx_feature_test="setsockopt(0, IPPROTO_IPV6, IPV6_RECVPKTINFO, NULL, 0)"
+. auto/feature
+
+
ngx_feature="TCP_DEFER_ACCEPT"
ngx_feature_name="NGX_HAVE_DEFERRED_ACCEPT"
ngx_feature_run=no