diff --git a/zephcore/boards/common/wifi_ota.conf b/zephcore/boards/common/wifi_ota.conf
index ab23380..85dfa75 100644
--- a/zephcore/boards/common/wifi_ota.conf
+++ b/zephcore/boards/common/wifi_ota.conf
@@ -52,3 +52,7 @@ CONFIG_IMG_ERASE_PROGRESSIVELY=y
 # ========== Heap (WiFi + TCP/IP + HTTP needs more than default) ==========
 CONFIG_HEAP_MEM_POOL_SIZE=65536
 
+# ========== Stack (DHCPv4 server handler runs on net_socket_service thread;
+# upstream default of 2400 bytes overflows on ESP32 when DHCP DISCOVER lands) ==========
+CONFIG_NET_SOCKETS_SERVICE_STACK_SIZE=4096
+