edns keepalive in example.conf
@@ -215,6 +215,12 @@ server:
# Idle TCP timeout, connection closed in milliseconds
# tcp-idle-timeout: 30000
+ # Enable EDNS TCP keepalive option.
+ # edns-tcp-keepalive: no
+
+ # Timeout for EDNS TCP keepalive, in msec.
+ # edns-tcp-keepalive-timeout: 120000
+
# Use systemd socket activation for UDP, TCP, and control sockets.
# use-systemd: no
