sample-lnd.conf: doc external-dns-address field

Author: mohamedawnallah

sample-lnd.conf

@@ -214,6 +214,14 @@
 ; address.
 ; externalip=
 ;
+
+; Specify a DNS address for the node's external address. If no port is
+; provided, the default (9735) is used.
+; Default:
+;   external-dns-address=
+; Example:
+;   external-dns-address=my-node-domain.com
+
 ; Instead of explicitly stating your external IP address, you can also enable
 ; UPnP or NAT-PMP support on the daemon. Both techniques will be tried and
 ; require proper hardware support. In order to detect this hardware support,