openwrt/package/utils/busybox/patches/201-udhcpc_changed_ifindex....

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--- a/networking/udhcp/dhcpc.c
+++ b/networking/udhcp/dhcpc.c
@@ -1422,6 +1422,12 @@ 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