Add ethernet DNS text sensor and simplify DNS display format (#6450)

esphome/components/ethernet_info/text_sensor.py

@@ -3,6 +3,7 @@ import esphome.config_validation as cv
 from esphome.components import text_sensor
 from esphome.const import (
     CONF_IP_ADDRESS,
+    CONF_DNS_ADDRESS,
     ENTITY_CATEGORY_DIAGNOSTIC,
 )
 
@@ -10,14 +11,18 @@ DEPENDENCIES = ["ethernet"]
 
 ethernet_info_ns = cg.esphome_ns.namespace("ethernet_info")
 
-IPAddressEsthernetInfo = ethernet_info_ns.class_(
+IPAddressEthernetInfo = ethernet_info_ns.class_(
     "IPAddressEthernetInfo", text_sensor.TextSensor, cg.PollingComponent
 )
 
+DNSAddressEthernetInfo = ethernet_info_ns.class_(
+    "DNSAddressEthernetInfo", text_sensor.TextSensor, cg.PollingComponent
+)
+
 CONFIG_SCHEMA = cv.Schema(
     {
         cv.Optional(CONF_IP_ADDRESS): text_sensor.text_sensor_schema(
-            IPAddressEsthernetInfo, entity_category=ENTITY_CATEGORY_DIAGNOSTIC
+            IPAddressEthernetInfo, entity_category=ENTITY_CATEGORY_DIAGNOSTIC
         )
         .extend(cv.polling_component_schema("1s"))
         .extend(
@@ -27,7 +32,10 @@ CONFIG_SCHEMA = cv.Schema(
                 )
                 for x in range(5)
             }
-        )
+        ),
+        cv.Optional(CONF_DNS_ADDRESS): text_sensor.text_sensor_schema(
+            DNSAddressEthernetInfo, entity_category=ENTITY_CATEGORY_DIAGNOSTIC
+        ).extend(cv.polling_component_schema("1s")),
     }
 )
 
@@ -40,3 +48,6 @@ async def to_code(config):
             if sensor_conf := conf.get(f"address_{x}"):
                 sens = await text_sensor.new_text_sensor(sensor_conf)
                 cg.add(ip_info.add_ip_sensors(x, sens))
+    if conf := config.get(CONF_DNS_ADDRESS):
+        dns_info = await text_sensor.new_text_sensor(config[CONF_DNS_ADDRESS])
+        await cg.register_component(dns_info, config[CONF_DNS_ADDRESS])