diff --git a/libc/docs/CMakeLists.txt b/libc/docs/CMakeLists.txt
index 5a3f8275bb932..a3875fbe59260 100644
--- a/libc/docs/CMakeLists.txt
+++ b/libc/docs/CMakeLists.txt
@@ -18,6 +18,7 @@ if (SPHINX_FOUND)
     # shell.
     file(MAKE_DIRECTORY
       "${CMAKE_CURRENT_BINARY_DIR}/headers/arpa/"
+      "${CMAKE_CURRENT_BINARY_DIR}/headers/netinet/"
       "${CMAKE_CURRENT_BINARY_DIR}/headers/sys/"
     )
 
@@ -40,6 +41,7 @@ if (SPHINX_FOUND)
       float
       inttypes
       locale
+      netinet/in
       setjmp
       signal
       stdbit
diff --git a/libc/docs/headers/index.rst b/libc/docs/headers/index.rst
index 07ab6dd9b2674..6f49cc0aa80e1 100644
--- a/libc/docs/headers/index.rst
+++ b/libc/docs/headers/index.rst
@@ -14,6 +14,7 @@ Implementation Status
    inttypes
    locale
    math/index.rst
+   netinet/in
    search
    setjmp
    signal
diff --git a/libc/utils/docgen/netinet/in.yaml b/libc/utils/docgen/netinet/in.yaml
new file mode 100644
index 0000000000000..69cab90181841
--- /dev/null
+++ b/libc/utils/docgen/netinet/in.yaml
@@ -0,0 +1,59 @@
+macros:
+  IPPROTO_IP:
+    in-latest-posix: ''
+  IPPROTO_IPV6:
+    in-latest-posix: ''
+  IPPROTO_ICMP:
+    in-latest-posix: ''
+  IPPROTO_RAW:
+    in-latest-posix: ''
+  IPPROTO_TCP:
+    in-latest-posix: ''
+  IPPROTO_UDP:
+    in-latest-posix: ''
+  INADDR_ANY:
+    in-latest-posix: ''
+  INET6_ADDRSTRLEN:
+    in-latest-posix: ''
+  INADDR_BROADCAST:
+    in-latest-posix: ''
+  INET_ADDRSTRLEN:
+    in-latest-posix: ''
+  IPV6_JOIN_GROUP:
+    in-latest-posix: ''
+  IPV6_LEAVE_GROUP:
+    in-latest-posix: ''
+  IPV6_MULTICAST_HOPS:
+    in-latest-posix: ''
+  IPV6_MULTICAST_IF:
+    in-latest-posix: ''
+  IPV6_MULTICAST_LOOP:
+    in-latest-posix: ''
+  IPV6_UNICAST_HOPS:
+    in-latest-posix: ''
+  IPV6_V6ONLY:
+    in-latest-posix: ''
+  IN6_IS_ADDR_UNSPECIFIED:
+    in-latest-posix: ''
+  IN6_IS_ADDR_LOOPBACK:
+    in-latest-posix: ''
+  IN6_IS_ADDR_MULTICAST:
+    in-latest-posix: ''
+  IN6_IS_ADDR_LINKLOCAL:
+    in-latest-posix: ''
+  IN6_IS_ADDR_SITELOCAL:
+    in-latest-posix: ''
+  IN6_IS_ADDR_V4MAPPED:
+    in-latest-posix: ''
+  IN6_IS_ADDR_V4COMPAT:
+    in-latest-posix: ''
+  IN6_IS_ADDR_MC_NODELOCAL:
+    in-latest-posix: ''
+  IN6_IS_ADDR_MC_LINKLOCAL:
+    in-latest-posix: ''
+  IN6_IS_ADDR_MC_SITELOCAL:
+    in-latest-posix: ''
+  IN6_IS_ADDR_MC_ORGLOCAL:
+    in-latest-posix: ''
+  IN6_IS_ADDR_MC_GLOBAL:
+    in-latest-posix: ''
\ No newline at end of file