diff --git a/src/rpc/net.cpp b/src/rpc/net.cpp
index 8d7f4e7f5b..94760c2a07 100644
--- a/src/rpc/net.cpp
+++ b/src/rpc/net.cpp
@@ -394,7 +394,7 @@ static RPCHelpMan disconnectnode()
                 "\nStrictly one out of 'address' and 'nodeid' can be provided to identify the node.\n"
                 "\nTo disconnect by nodeid, either set 'address' to the empty string, or call using the named 'nodeid' argument only.\n",
                 {
-                    {"address", RPCArg::Type::STR, RPCArg::DefaultHint{"fallback to nodeid"}, "The IP address/port of the node"},
+                    {"address", RPCArg::Type::STR, RPCArg::DefaultHint{"fallback to nodeid"}, "The IP address/port of the node or subnet"},
                     {"nodeid", RPCArg::Type::NUM, RPCArg::DefaultHint{"fallback to address"}, "The node ID (see getpeerinfo for node IDs)"},
                 },
                 RPCResult{RPCResult::Type::NONE, "", ""},
@@ -415,7 +415,16 @@ static RPCHelpMan disconnectnode()
 
     if (!address_arg.isNull() && id_arg.isNull()) {
         /* handle disconnect-by-address */
-        success = connman.DisconnectNode(address_arg.get_str());
+        if (address_arg.get_str().find('/') != std::string::npos) {
+            CSubNet subnet;
+            if (LookupSubNet(address_arg.get_str(), subnet)) {
+                success = connman.DisconnectNode(subnet);
+            } else {
+                throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid subnet");
+            }
+        } else {
+            success = connman.DisconnectNode(address_arg.get_str());
+        }
     } else if (!id_arg.isNull() && (address_arg.isNull() || (address_arg.isStr() && address_arg.get_str().empty()))) {
         /* handle disconnect-by-id */
         NodeId nodeid = (NodeId) id_arg.getInt<int64_t>();