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path: root/package/busybox/patches/243-udhcpc_changed_ifindex.patch
blob: cb0df224cc75e51bed36ffe306ba3b71e1fe17c8 (plain)
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--- a/networking/udhcp/dhcpc.c
+++ b/networking/udhcp/dhcpc.c
@@ -1267,6 +1267,12 @@ int udhcpc_main(int argc UNUSED_PARAM, c
 		/* silence "uninitialized!" warning */
 		unsigned timestamp_before_wait = timestamp_before_wait;
 
+		/* When running on a bridge, the ifindex may have changed (e.g. if
+		 * member interfaces were added/removed or if the status of the
+		 * bridge changed).
+		 * Workaround: refresh it here before processing the next packet */
+		udhcp_read_interface(client_config.interface, &client_config.ifindex, NULL, client_config.client_mac);
+
 		//bb_error_msg("sockfd:%d, listen_mode:%d", sockfd, listen_mode);
 
 		/* Was opening raw or udp socket here