Package: ddclient
Version: 3.8.3-1.1
Severity: normal
Dear Maintainer,
I was using ddclient to manage my dynamic DNS for years.
I'm using a PPP connection which is supposed to remain connected all the time,
but still, disconnections can happen, and when it does, my IP address usually
need to be updated.
Using the /etc/ppp/ip-up.d update mechanism, ddclient was keeping my IP address
up to date most of the time.
But I ran into an unfrequent, but still major issue recently.
My PPP connection dropped and was re-established. ddclient updated the IP
address as it should. However, the PPP connection dropped and was
re-established a second time within a 5 minutes timeframe. ddclient refused to
update the IP address again, because it consider updating less than 5 minutes
after a previous update could be considered abuse.
The problem is, since I'm not running ddclient as a daemon, ddclient never
retried to update the IP address again, so my dynamic DNS was no longer valid.
It would remain like that until the next PPP reconnection, which could be weeks
later.
Relevant lines from syslog:
May 21 03:46:15 localhost pppd[2253]: Modem hangup
May 21 03:46:15 localhost pppd[2253]: Connect time 74973.3 minutes.
May 21 03:46:15 localhost pppd[2253]: Sent 2469255726 bytes, received 824242333
bytes.
May 21 03:46:15 localhost pppd[2253]: Connection terminated.
May 21 03:46:16 localhost pppd[2253]: Sent PADT
May 21 03:47:21 localhost pppd[2253]: Timeout waiting for PADO packets
May 21 03:47:21 localhost pppd[2253]: Unable to complete PPPoE Discovery
May 21 03:48:26 localhost pppd[2253]: Timeout waiting for PADO packets
May 21 03:48:26 localhost pppd[2253]: Unable to complete PPPoE Discovery
May 21 03:48:56 localhost pppd[2253]: PPP session is 2927
May 21 03:48:56 localhost pppd[2253]: Using interface ppp0
May 21 03:48:56 localhost pppd[2253]: Connect: ppp0 <--> enp3s0
May 21 03:48:59 localhost pppd[2253]: Remote message: Login ok
May 21 03:48:59 localhost pppd[2253]: PAP authentication succeeded
May 21 03:48:59 localhost pppd[2253]: local IP address 77.77.77.130
May 21 03:48:59 localhost pppd[2253]: remote IP address 10.11.16.17
May 21 03:48:59 localhost ddclient[18582]: WARNING: forcing update of
my-dynamic-dns.com from 77.77.77.130 to 77.77.77.130; 30 days since last update
on Wed Mar 31 09:26:46 2021.
May 21 03:48:59 localhost ddclient[18582]: WARNING: forcing update of
yo.my-dynamic-dns.com from 77.77.77.130 to 77.77.77.130; 30 days since last
update on Wed Mar 31 09:26:46 2021.
May 21 03:49:04 localhost pppd[2253]: Modem hangup
May 21 03:49:04 localhost pppd[2253]: Connect time 0.1 minutes.
May 21 03:49:04 localhost pppd[2253]: Sent 13 bytes, received 203873 bytes.
May 21 03:49:04 localhost pppd[2253]: Connection terminated.
May 21 03:49:04 localhost pppd[2253]: Sent PADT
May 21 03:49:34 localhost pppd[2253]: PPP session is 2928
May 21 03:49:34 localhost pppd[2253]: Using interface ppp0
May 21 03:49:34 localhost pppd[2253]: Connect: ppp0 <--> enp3s0
May 21 03:49:37 localhost pppd[2253]: Remote message: Login ok
May 21 03:49:37 localhost pppd[2253]: PAP authentication succeeded
May 21 03:49:37 localhost pppd[2253]: local IP address 70.52.5.154
May 21 03:49:37 localhost pppd[2253]: remote IP address 10.11.16.17
May 21 03:49:37 localhost ddclient[18629]: WARNING: skipping update of
my-dynamic-dns.com from 77.77.77.130 to 77.77.5.154.
May 21 03:49:37 localhost ddclient[18629]: WARNING: last updated Fri May 21
03:48:59 2021.
May 21 03:49:37 localhost ddclient[18629]: WARNING: Wait at least 5 minutes
between update attempts.
May 21 03:49:37 localhost ddclient[18629]: WARNING: skipping update of
yo.my-dynamic-dns.com from 77.77.77.130 to 77.77.5.154.
May 21 03:49:37 localhost ddclient[18629]: WARNING: last updated Fri May 21
03:48:59 2021.
May 21 03:49:37 localhost ddclient[18629]: WARNING: Wait at least 5 minutes
between update attempts.
/etc/ddclient.conf
# Configuration file for ddclient generated by debconf
#
# /etc/ddclient.conf
use=if, if=ppp0
ssl=yes
protocol=googledomains
login=my_user
password=my_pass
my-dynamic-dns.com
ssl=yes
protocol=googledomains
login=my_user
password=my_pass
yo.my-dynamic-dns.com
-- System Information:
Debian Release: 10.9
APT prefers stable
APT policy: (990, 'stable'), (500, 'stable-updates'), (500, 'oldoldstable'),
(500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 4.19.0-9-amd64 (SMP w/2 CPU cores)
Locale: LANG=fr_CA.UTF-8, LC_CTYPE=fr_CA.UTF-8 (charmap=UTF-8),
LANGUAGE=fr_CA:fr_FR:fr:en_GB:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Init: systemd (via /run/systemd/system)
Versions of packages ddclient depends on:
ii debconf [debconf-2.0] 1.5.71
ii init-system-helpers 1.56+nmu1
pn initscripts
pn libdata-validate-ip-perl
ii lsb-base 10.2019051400
ii perl 5.28.1-6+deb10u1
pn perl5
Versions of packag
