mirror of
https://github.com/Telecominfraproject/wlan-ap.git
synced 2025-10-29 17:42:41 +00:00
b717b1361d
Do not renew the dhcp on bridge topology change as this causes some of the dhcp servers to fail. This occurs when many interfaces are added on to a bridge and for every interface there is a dhcp renew. The server considers receiving renew many times in a quick succession as a DOS attack. So for now we disable dhcp lease renew when a new interface is added. Signed-off-by: Chaitanya Godavarthi <chaitanya.kiran@netexperience.com>
47 lines
1.9 KiB
Diff
47 lines
1.9 KiB
Diff
From 5380b0204d97a79669243b46a8750e038e6a0a19 Mon Sep 17 00:00:00 2001
|
|
From: Chaitanya Godavarthi <chaitanya.kiran@netexperience.com>
|
|
Date: Wed, 14 Apr 2021 11:14:45 -0400
|
|
Subject: [PATCH] netifd: Dont renew dhcp on bridge topo change
|
|
|
|
Do not renew the dhcp on bridge topology change
|
|
as this causes some of the dhcp servers to fail.
|
|
This occurs when many interfaces are added on to
|
|
a bridge and for every interface there is a dhcp
|
|
renew. The server considers receiving renew many
|
|
times in a quick succession as a DOS attack. So for
|
|
now we disable dhcp lease renew when a new interface
|
|
is added.
|
|
|
|
Signed-off-by: Chaitanya Godavarthi <chaitanya.kiran@netexperience.com>
|
|
---
|
|
.../netifd/patches/0104-fix-dhcp-issue.patch | 17 +++++++++++++++++
|
|
1 file changed, 17 insertions(+)
|
|
create mode 100644 package/network/config/netifd/patches/0104-fix-dhcp-issue.patch
|
|
|
|
diff --git a/package/network/config/netifd/patches/0104-fix-dhcp-issue.patch b/package/network/config/netifd/patches/0104-fix-dhcp-issue.patch
|
|
new file mode 100644
|
|
index 0000000000..6f1d2e708e
|
|
--- /dev/null
|
|
+++ b/package/network/config/netifd/patches/0104-fix-dhcp-issue.patch
|
|
@@ -0,0 +1,17 @@
|
|
+Index: netifd-2019-08-05-5e02f944/interface.c
|
|
+===================================================================
|
|
+--- netifd-2019-08-05-5e02f944.orig/interface.c
|
|
++++ netifd-2019-08-05-5e02f944/interface.c
|
|
+@@ -424,7 +424,11 @@ interface_main_dev_cb(struct device_user
|
|
+ interface_set_link_state(iface, false);
|
|
+ break;
|
|
+ case DEV_EVENT_TOPO_CHANGE:
|
|
+- interface_proto_event(iface->proto, PROTO_CMD_RENEW, false);
|
|
++ /* This renews the dhcp lease when the bridge adds/deletes a
|
|
++ * new interface. It causes some dhcp servers to fail in
|
|
++ * case where there are many interfaces being added to the
|
|
++ * bridge frequently. Disabling this for now. */
|
|
++ /* interface_proto_event(iface->proto, PROTO_CMD_RENEW, false); */
|
|
+ return;
|
|
+ default:
|
|
+ break;
|
|
--
|
|
2.25.1
|
|
|