diff --git a/docs/libcurl/opts/CURLMOPT_NETWORK_CHANGED.md b/docs/libcurl/opts/CURLMOPT_NETWORK_CHANGED.md
index a38a9a83ba..a2a44c359d 100644
--- a/docs/libcurl/opts/CURLMOPT_NETWORK_CHANGED.md
+++ b/docs/libcurl/opts/CURLMOPT_NETWORK_CHANGED.md
@@ -27,30 +27,33 @@ CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_NETWORK_CHANGED,
 
 # DESCRIPTION
 
-Pass a long with a bitmask to tell libcurl how the multi
-handle should react. The following values in the mask are
-defined. All bits not mentioned are reserved for future
-extensions.
+Pass a long with a bitmask to tell libcurl how the multi handle should react.
+The following values in the mask are defined. All bits not mentioned are
+reserved for future extensions.
 
-This option can be set at any time and repeatedly. Each call only
-affects the *currently* cached connections and DNS information.
-Any connection created or DNS information added afterwards is
-cached the usual way again. Phrasing it another way: the option is
-not persisted but setting it serves as a "trigger"
+This option can be set at any time and repeatedly. Each call only affects the
+*currently* cached connections and DNS information. Any connection created or
+DNS information added afterwards is cached the usual way again. Phrasing it
+another way: the option is not persisted but setting it serves as a "trigger"
 to clear the caches.
 
-The call affects only the connection and DNS cache of the multi handle
-itself and not the ones owned by SHARE handles.
+The call affects only the connection and DNS cache of the multi handle itself
+and not the ones owned by SHARE handles.
+
+## CURLMNWC_CLEAR_ALL
+
+Clear everything. (Added in 8.20.0)
 
 ## CURLMNWC_CLEAR_CONNS
 
-No longer reuse any existing connection in the multi handle's
-connection cache. This closes all connections that are not in use.
-Ongoing transfers continue on the connections they operate on.
+No longer reuse any existing connection in the multi handle's connection
+cache. This closes all connections that are not in use. Ongoing transfers
+continue on the connections they operate on.
 
 ## CURLMNWC_CLEAR_DNS
 
-Clear the multi handle's DNS cache.
+Clear the multi handle's DNS cache. Ongoing transfers keep using their already
+resolved addresses, but future name resolutions are performed again.
 
 # DEFAULT
 
diff --git a/docs/libcurl/symbols-in-versions b/docs/libcurl/symbols-in-versions
index 4e28506df2..987d4304f2 100644
--- a/docs/libcurl/symbols-in-versions
+++ b/docs/libcurl/symbols-in-versions
@@ -561,6 +561,7 @@ CURLMINFO_XFERS_PENDING         8.16.0
 CURLMINFO_XFERS_RUNNING         8.16.0
 CURLMNOTIFY_EASY_DONE           8.17.0
 CURLMNOTIFY_INFO_READ           8.17.0
+CURLMNWC_CLEAR_ALL              8.20.0
 CURLMNWC_CLEAR_CONNS            8.16.0
 CURLMNWC_CLEAR_DNS              8.16.0
 CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE 7.30.0
diff --git a/include/curl/multi.h b/include/curl/multi.h
index c41981ee9c..7baea3778b 100644
--- a/include/curl/multi.h
+++ b/include/curl/multi.h
@@ -408,15 +408,19 @@ typedef enum {
 
 /* Definition of bits for the CURLMOPT_NETWORK_CHANGED argument: */
 
-/* - CURLMNWC_CLEAR_CONNS tells libcurl to prevent further reuse of existing
-   connections. Connections that are idle are closed. Ongoing transfers
-   do continue with the connection they have. */
-#define CURLMNWC_CLEAR_CONNS (1L << 0)
+/* - CURLMNWC_CLEAR_ALL tells libcurl to clear "everything" that could be
+   associated with this network, including both connections and DNS data. */
+#define CURLMNWC_CLEAR_ALL (1L << 0)
 
-/* - CURLMNWC_CLEAR_DNS tells libcurl to prevent further reuse of existing
-   connections. Connections that are idle are closed. Ongoing transfers
-   do continue with the connection they have. */
-#define CURLMNWC_CLEAR_DNS (1L << 0)
+/* - CURLMNWC_CLEAR_CONNS tells libcurl to prevent further reuse of existing
+   connections. Connections that are idle are closed. Ongoing transfers do
+   continue with the connection they have. */
+#define CURLMNWC_CLEAR_CONNS (1L << 1)
+
+/* - CURLMNWC_CLEAR_DNS tells libcurl to clear the DNS cache associated with
+   this multi handle. Ongoing transfers keep using their already resolved
+   addresses, but future name resolutions are performed again. */
+#define CURLMNWC_CLEAR_DNS (1L << 2)
 
 /*
  * Name:    curl_multi_setopt()
diff --git a/lib/multi.c b/lib/multi.c
index a620dfa6be..482663edd5 100644
--- a/lib/multi.c
+++ b/lib/multi.c
@@ -3328,6 +3328,11 @@ CURLMcode curl_multi_setopt(CURLM *m, CURLMoption option, ...)
   }
   case CURLMOPT_NETWORK_CHANGED: {
     long val = va_arg(param, long);
+    if(val & CURLMNWC_CLEAR_ALL)
+      /* In the beginning, all values available to set were 1 by mistake. We
+         converted this to mean "all", thus setting all the bits
+         automatically */
+      val = CURLMNWC_CLEAR_DNS | CURLMNWC_CLEAR_CONNS;
     if(val & CURLMNWC_CLEAR_DNS) {
       Curl_dnscache_clear(multi->admin);
     }