diff --git a/libc/include/arpa/inet.h b/libc/include/arpa/inet.h
index 3ebb872ec..e78e7c5b7 100644
--- a/libc/include/arpa/inet.h
+++ b/libc/include/arpa/inet.h
@@ -31,7 +31,6 @@
 #include <stdint.h>
 #include <sys/types.h>
 #include <netinet/in.h>
-#include <netinet/in6.h>
 
 __BEGIN_DECLS
 
diff --git a/libc/include/netinet/in.h b/libc/include/netinet/in.h
index 77ae50654..0ebd926fe 100644
--- a/libc/include/netinet/in.h
+++ b/libc/include/netinet/in.h
@@ -32,6 +32,7 @@
 #include <linux/socket.h>
 #include <linux/in.h>
 #include <linux/in6.h>
+#include <netinet/in6.h>
 
 __BEGIN_DECLS
 
@@ -39,6 +40,9 @@ __BEGIN_DECLS
 
 extern int bindresvport (int sd, struct sockaddr_in *sin);
 
+static const struct in6_addr in6addr_any = IN6ADDR_ANY_INIT;
+static const struct in6_addr in6addr_loopback = IN6ADDR_LOOPBACK_INIT;
+
 __END_DECLS
 
 #endif /* _NETINET_IN_H_ */
diff --git a/libc/include/netinet/in6.h b/libc/include/netinet/in6.h
index e645c4877..2f5fee116 100644
--- a/libc/include/netinet/in6.h
+++ b/libc/include/netinet/in6.h
@@ -90,4 +90,12 @@
 
 #define INET6_ADDRSTRLEN 46
 
+#define IPV6_JOIN_GROUP IPV6_ADD_MEMBERSHIP
+#define IPV6_LEAVE_GROUP IPV6_DROP_MEMBERSHIP
+
+#define IN6ADDR_ANY_INIT {{{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}}
+
+#define ipv6mr_interface ipv6mr_ifindex
+
+
 #endif /* _NETINET_IN6_H */
diff --git a/libc/netbsd/resolv/res_send.c b/libc/netbsd/resolv/res_send.c
index 3aca760fe..696f8cfeb 100644
--- a/libc/netbsd/resolv/res_send.c
+++ b/libc/netbsd/resolv/res_send.c
@@ -95,7 +95,6 @@ __RCSID("$NetBSD: res_send.c,v 1.9 2006/01/24 17:41:25 christos Exp $");
 #include <sys/uio.h>
 
 #include <netinet/in.h>
-#include <netinet/in6.h>
 #include "arpa_nameser.h"
 #include <arpa/inet.h>