diff --git a/examples/wifi/iperf/sdkconfig.defaults b/examples/wifi/iperf/sdkconfig.defaults
index f096b6f061..17478fdc8c 100644
--- a/examples/wifi/iperf/sdkconfig.defaults
+++ b/examples/wifi/iperf/sdkconfig.defaults
@@ -6,7 +6,6 @@ CONFIG_FREERTOS_HZ=1000
 CONFIG_ESP_INT_WDT=n
 CONFIG_ESP_TASK_WDT_EN=n
 
-CONFIG_LWIP_ETHARP_TRUST_IP_MAC=n
 CONFIG_LWIP_IRAM_OPTIMIZATION=y
 CONFIG_LWIP_TCPIP_TASK_PRIO=23
 
diff --git a/tools/ci/ignore_build_warnings.txt b/tools/ci/ignore_build_warnings.txt
index ca30cdaf9b..dddea3463f 100644
--- a/tools/ci/ignore_build_warnings.txt
+++ b/tools/ci/ignore_build_warnings.txt
@@ -27,8 +27,6 @@ warning: unknown kconfig symbol 'ESP32_REV_MIN_3' assigned to 'y' in .*/examples
 warning: unknown kconfig symbol 'ESP32_REV_MIN' assigned to '3' in .*/examples/system/ota/simple_ota_example/sdkconfig.ci.on_update_no_sb_rsa
 warning: unknown kconfig symbol 'ESP32H4_RTC_CLK_CAL_CYCLES' assigned to '576' in .*/examples/bluetooth/nimble/blecent/sdkconfig.defaults.esp32h4
 warning: unknown kconfig symbol 'ESP32H4_RTC_CLK_SRC_EXT_CRYS' assigned to 'y' in .*/examples/bluetooth/nimble/blecent/sdkconfig.defaults.esp32h4
-warning: unknown kconfig symbol 'LWIP_ETHARP_TRUST_IP_MAC' assigned to 'n' in .*/examples/wifi/iperf/*
-warning: unknown kconfig symbol 'LWIP_ETHARP_TRUST_IP_MAC' assigned to 'n' in .*/idf-app-test/apps/iperf/*
 warning: unknown kconfig symbol 'SPIRAM_FETCH_INSTRUCTIONS' assigned to 'y' in .*/components/spi_flash/test_apps/mspi_test/sdkconfig.ci.psram
 warning: unknown kconfig symbol 'SPIRAM_IGNORE_NOTFOUND' assigned to 'y' in .*/examples/network/simple_sniffer/sdkconfig.ci.mem
 warning: unknown kconfig symbol 'SPIRAM_RODATA' assigned to 'y' in .*/components/spi_flash/test_apps/mspi_test/sdkconfig.ci.psram
diff --git a/tools/ldgen/samples/sdkconfig b/tools/ldgen/samples/sdkconfig
index 602129ddc2..2509ec3ad4 100644
--- a/tools/ldgen/samples/sdkconfig
+++ b/tools/ldgen/samples/sdkconfig
@@ -337,7 +337,6 @@ CONFIG_LWIP_DHCP_MAX_NTP_SERVERS=1
 CONFIG_LWIP_IP_FRAG=
 CONFIG_LWIP_IP_REASSEMBLY=
 CONFIG_LWIP_STATS=
-CONFIG_LWIP_ETHARP_TRUST_IP_MAC=y
 CONFIG_LWIP_TCPIP_RECVMBOX_SIZE=32
 CONFIG_LWIP_DHCP_DOES_ARP_CHECK=y