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-rw-r--r--.env.example9
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diff --git a/.env.example b/.env.example
index 9764eed..9d36a7c 100644
--- a/.env.example
+++ b/.env.example
@@ -13,3 +13,12 @@
# LAN_SUBNET is swept (TCP probes) so idle devices populate the ARP table and
# show as "online". Leave empty to disable. Max /20.
# LAN_SUBNET=192.168.8.0/24
+
+# DNS server (enable with the -dns flag). It's authoritative for the zone
+# (-dns-zone, default penguins.lan): every device answers at
+# <mac>.<username>.<zone> and users manage their own records from /profile.
+# SERVER_IP answers the zone apex so the website itself resolves; leave empty to
+# skip the apex. Queries outside the zone go to -dns-resolvers (comma-separated,
+# empty = no forwarding). Real port 53 needs root or CAP_NET_BIND_SERVICE; the
+# default -dns-port is 8053.
+# SERVER_IP=192.168.8.1