diff --git a/libc/dns/include/resolv_netid.h b/libc/dns/include/resolv_netid.h
index f1b88920e..e5521b809 100644
--- a/libc/dns/include/resolv_netid.h
+++ b/libc/dns/include/resolv_netid.h
@@ -61,6 +61,9 @@ int android_getaddrinfofornet(const char *, const char *, const struct addrinfo
 extern void _resolv_set_nameservers_for_net(unsigned netid,
     const char** servers, int numservers, const char *domains) __used_in_netd;
 
+/* flush the cache associated with a certain network */
+extern void _resolv_flush_cache_for_net(unsigned netid) __used_in_netd;
+
 /* delete the cache associated with a certain network */
 extern void _resolv_delete_cache_for_net(unsigned netid) __used_in_netd;
 
diff --git a/libc/dns/resolv/res_cache.c b/libc/dns/resolv/res_cache.c
index c934b4ee6..419b748d4 100644
--- a/libc/dns/resolv/res_cache.c
+++ b/libc/dns/resolv/res_cache.c
@@ -1831,6 +1831,17 @@ _get_res_cache_for_net_locked(unsigned netid)
     return cache;
 }
 
+void
+_resolv_flush_cache_for_net(unsigned netid)
+{
+    pthread_once(&_res_cache_once, _res_cache_init);
+    pthread_mutex_lock(&_res_cache_list_lock);
+
+    _flush_cache_for_net_locked(netid);
+
+    pthread_mutex_unlock(&_res_cache_list_lock);
+}
+
 static void
 _flush_cache_for_net_locked(unsigned netid)
 {