diff --git a/libc/include/netdb.h b/libc/include/netdb.h
index ead5954..3ea512c 100644
--- a/libc/include/netdb.h
+++ b/libc/include/netdb.h
@@ -207,11 +207,13 @@
 void endservent(void);
 void freehostent(struct hostent *);
 struct hostent	*gethostbyaddr(const void *, socklen_t, int);
+struct hostent	*android_gethostbyaddrforiface(const void *, socklen_t, int, const char*);
 int gethostbyaddr_r(const void *, int, int, struct hostent *, char *, size_t, struct hostent **, int *);
 struct hostent	*gethostbyname(const char *);
 int gethostbyname_r(const char *, struct hostent *, char *, size_t, struct hostent **, int *);
 struct hostent	*gethostbyname2(const char *, int);
 int gethostbyname2_r(const char *, int, struct hostent *, char *, size_t, struct hostent **, int *);
+struct hostent	*android_gethostbynameforiface(const char *, int, const char *);
 struct hostent	*gethostent(void);
 int gethostent_r(struct hostent *, char *, size_t, struct hostent **, int *);
 struct hostent	*getipnodebyaddr(const void *, size_t, int, int *);
@@ -239,7 +241,9 @@
 void setnetent(int);
 void setprotoent(int);
 int getaddrinfo(const char *, const char *, const struct addrinfo *, struct addrinfo **);
+int android_getaddrinfoforiface(const char *, const char *, const struct addrinfo *, const char *, struct addrinfo **);
 int getnameinfo(const struct sockaddr *, socklen_t, char *, size_t, char *, size_t, int);
+int android_getnameinfoforiface(const struct sockaddr *, socklen_t, char *, size_t, char *, size_t, int, const char *);
 void freeaddrinfo(struct addrinfo *);
 const char	*gai_strerror(int);
 void setnetgrent(const char *);