DDNS Monitoring

...wanna see if DDNS is working between OpenWRT's DDNS Service (Scripts) and NAMED / BIND?

On the NAMED / BIND Server for monitoring Network Traffic related to DDNS (requires setting up appropriate logging in named.conf, not covered here): tail -n0 -F /WhatEverPath/WhatEverFileName.log 2>/dev/null | grep --line-buffered -Ei 'signer "ddns" approved|update .*approved|updating zone|adding an RR|deleting rrset|BADKEY|BADSIG|BADTIME|NOTAUTH|REFUSED|denied'

On the OpenWRT DDNS Server;

rm -f /var/run/ddns/WhatEverName.update
rm -f /var/run/ddns/WhatEverName.update
rm -f /var/run/ddns/WhatEverName.update
service ddns restart

To Sync the Journal and Zone File (so results can be seen in the Zone File): rndc sync Example /etc/config/ddns Config File that works in 2026 with HMAC-SHA256 'Password Encryption';

config ddns 'global'
	option ddns_dateformat '%F %R'
	option ddns_loglines '250'
	option use_curl '1'
	option ddns_rundir '/var/run/ddns'
	option ddns_logdir '/var/log/ddns'
	option upd_privateip '1'

config service 'WhatEverServiceName'
	option service_name 'bind-nsupdate'
	option lookup_host 'WhatEverHostLookUp'
	option username 'hmac-sha256:ddns'
	option password 'WhatEverPassword'
	option domain 'WhatEverDomain'
	option enabled '1'
	option ip_source 'web'
	option ip_url 'https://api.ipify.org'
	option bind_network 'wan'
	option force_ipversion '1'
	option interface 'wan'
	option dns_server 'WhatEverDNSServer'
	option check_unit 'minutes'
	option check_interval '5'
	option force_unit 'hours'
	option force_interval '1'

config service 'WhatEverServiceName'
	option service_name 'bind-nsupdate'
	option lookup_host 'WhatEverHostLookUp'
	option username 'hmac-sha256:ddns'
	option password 'WhatEverPassword'
	option domain 'WhatEverDomain'
	option enabled '1'
	option ip_source 'interface'
	option ip_interface 'wan'
	option bind_network 'wan'
	option force_ipversion '1'
	option interface 'wan'
	option dns_server 'WhatEverDNSServer'
	option check_unit 'minutes'
	option check_interval '5'
	option force_unit 'hours'
	option force_interval '1'

config service 'WhatEverServiceName'
	option service_name 'bind-nsupdate'
	option lookup_host 'WhatEverHostLookUp'
	option username 'hmac-sha256:ddns'
	option password 'WhatEverPassword'
	option domain 'WhatEverDomain'
	option enabled '1'
	option ip_source 'network'
	option ip_network 'wan'
	option bind_network 'wan'
	option force_ipversion '1'
	option interface 'wan'
	option dns_server 'WhatEverDNSServer'
	option check_unit 'minutes'
	option check_interval '5'
	option force_unit 'hours'
	option force_interval '1'