diff --git a/libc/dns/ent.h b/libc/dns/ent.h
index b37ab46fe..930ce0f31 100644
--- a/libc/dns/ent.h
+++ b/libc/dns/ent.h
@@ -7,6 +7,19 @@ COSMOPOLITAN_C_START_
 
 extern int h_errno;
 
+struct netent {
+  char *n_name;     /* official network name */
+  char **n_aliases; /* alias list */
+  int n_addrtype;   /* net address type */
+  uint32_t n_net;   /* network number */
+};
+
+struct protoent {
+  char *p_name;     /* official protocol name */
+  char **p_aliases; /* alias list */
+  int p_proto;      /* protocol number */
+};
+
 struct hostent {
   char *h_name;       /* official name of host */
   char **h_aliases;   /* alias list */
@@ -23,6 +36,18 @@ struct servent {
   char *s_proto;    /* protocol to use */
 };
 
+struct netent *getnetent(void);
+struct netent *getnetbyname(const char *);
+struct netent *getnetbyaddr(uint32_t, int);
+void setnetent(int);
+void endnetent(void);
+
+struct protoent *getprotoent(void);
+struct protoent *getprotobyname(const char *);
+struct protoent *getprotobynumber(int);
+void setprotoent(int);
+void endprotoent(void);
+
 struct hostent *gethostent(void);
 struct hostent *gethostbyname(const char *);
 struct hostent *gethostbyaddr(const void *, socklen_t, int);
diff --git a/libc/dns/netent.c b/libc/dns/netent.c
new file mode 100644
index 000000000..abca500f0
--- /dev/null
+++ b/libc/dns/netent.c
@@ -0,0 +1,46 @@
+/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
+│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :vi│
+╞══════════════════════════════════════════════════════════════════════════════╡
+│ This is free and unencumbered software released into the public domain.      │
+│                                                                              │
+│ Anyone is free to copy, modify, publish, use, compile, sell, or              │
+│ distribute this software, either in source code form or as a compiled        │
+│ binary, for any purpose, commercial or non-commercial, and by any            │
+│ means.                                                                       │
+│                                                                              │
+│ In jurisdictions that recognize copyright laws, the author or authors        │
+│ of this software dedicate any and all copyright interest in the              │
+│ software to the public domain. We make this dedication for the benefit       │
+│ of the public at large and to the detriment of our heirs and                 │
+│ successors. We intend this dedication to be an overt act of                  │
+│ relinquishment in perpetuity of all present and future rights to this        │
+│ software under copyright law.                                                │
+│                                                                              │
+│ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,              │
+│ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF           │
+│ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.       │
+│ IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR            │
+│ OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,        │
+│ ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR        │
+│ OTHER DEALINGS IN THE SOFTWARE.                                              │
+│                                                                              │
+╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/dns/ent.h"
+
+struct netent *getnetent(void) {
+  return NULL;
+}
+
+struct netent *getnetbyname(const char *name) {
+  return NULL;
+}
+
+struct netent *getnetbyaddr(uint32_t net, int type) {
+  return NULL;
+}
+
+void setnetent(int stayopen) {
+}
+
+void endnetent(void) {
+}
diff --git a/libc/dns/protoent.c b/libc/dns/protoent.c
new file mode 100644
index 000000000..0e0e6936a
--- /dev/null
+++ b/libc/dns/protoent.c
@@ -0,0 +1,46 @@
+/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
+│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :vi│
+╞══════════════════════════════════════════════════════════════════════════════╡
+│ This is free and unencumbered software released into the public domain.      │
+│                                                                              │
+│ Anyone is free to copy, modify, publish, use, compile, sell, or              │
+│ distribute this software, either in source code form or as a compiled        │
+│ binary, for any purpose, commercial or non-commercial, and by any            │
+│ means.                                                                       │
+│                                                                              │
+│ In jurisdictions that recognize copyright laws, the author or authors        │
+│ of this software dedicate any and all copyright interest in the              │
+│ software to the public domain. We make this dedication for the benefit       │
+│ of the public at large and to the detriment of our heirs and                 │
+│ successors. We intend this dedication to be an overt act of                  │
+│ relinquishment in perpetuity of all present and future rights to this        │
+│ software under copyright law.                                                │
+│                                                                              │
+│ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,              │
+│ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF           │
+│ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.       │
+│ IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR            │
+│ OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,        │
+│ ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR        │
+│ OTHER DEALINGS IN THE SOFTWARE.                                              │
+│                                                                              │
+╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/dns/ent.h"
+
+struct protoent *getprotoent(void) {
+  return NULL;
+}
+
+struct protoent *getprotobyname(const char *name) {
+  return NULL;
+}
+
+struct protoent *getprotobynumber(int proto) {
+  return NULL;
+}
+
+void setprotoent(int stayopen) {
+}
+
+void endprotoent(void) {
+}