Package: ntp
Version: 1:4.2.8p15+dfsg-1
Severity: normal
Dear Maintainer,
In Debian Buster (same in Sid) I've noticed that I get "spam" of these
messages in syslog:
```
Sep 28 21:57:38 dl380 ntpd[739]: Soliciting pool server 193.219.61.120
Sep 28 21:57:38 dl380 ntpd[739]: Soliciting pool server 54.36.152.158
Sep 28 21:57:39 dl380 ntpd[739]: Soliciting pool server 2001:778::120
Sep 28 21:58:47 dl380 ntpd[739]: Soliciting pool server 2001:778::120
Sep 28 21:59:54 dl380 ntpd[739]: Soliciting pool server 2001:778::120
Sep 28 22:01:02 dl380 ntpd[739]: Soliciting pool server 2001:778::120
<and so on>
```
These machines doest not have ipv6 address set, for example:
```
ip addr
<skipped>
2: enp0s3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP
group default qlen 1000
link/ether 08:00:27:44:4a:ae brd ff:ff:ff:ff:ff:ff
inet 192.168.1.198/24 brd 192.168.1.255 scope global enp0s3
valid_lft forever preferred_lft forever
inet6 fe80::a00:27ff:fe44:4aae/64 scope link
valid_lft forever preferred_lft forever
```
I've tried editing /etc/default/ntp so it looks like this:
```
NTPD_OPTS='-4 -g'
```
Still, I see ipv6 servers queried:
```
Sep 29 10:08:05 sid systemd[1]: Starting Network Time Service...
Sep 29 10:08:05 sid ntpd[1112]: ntpd [email protected] Wed Sep 23 11:46:38 UTC
2020 (1): Starting
Sep 29 10:08:05 sid ntpd[1112]: Command line: /usr/sbin/ntpd -p
/var/run/ntpd.pid -4 -g -u 106:112
Sep 29 10:08:05 sid ntpd[1112]:
----------------------------------------------------
Sep 29 10:08:05 sid ntpd[1112]: ntp-4 is maintained by Network Time Foundation,
Sep 29 10:08:05 sid ntpd[1112]: Inc. (NTF), a non-profit 501(c)(3)
public-benefit
Sep 29 10:08:05 sid ntpd[1112]: corporation. Support and training for ntp-4 are
Sep 29 10:08:05 sid ntpd[1112]: available at https://www.nwtime.org/support
Sep 29 10:08:05 sid ntpd[1112]:
----------------------------------------------------
Sep 29 10:08:05 sid ntpd[1118]: proto: precision = 0.056 usec (-24)
Sep 29 10:08:05 sid ntpd[1118]: basedate set to 2020-09-11
Sep 29 10:08:05 sid ntpd[1118]: gps base set to 2020-09-13 (week 2123)
Sep 29 10:08:05 sid ntpd[1118]: restrict: ignoring line 40, mask '::' unusable.
Sep 29 10:08:05 sid ntpd[1118]: leapsecond file
('/usr/share/zoneinfo/leap-seconds.list'): good hash signature
Sep 29 10:08:05 sid ntpd[1118]: leapsecond file
('/usr/share/zoneinfo/leap-seconds.list'): loaded, expire=2020-12-28T00:00:00Z
last=2017-01-01T00:00:00Z ofs=37
Sep 29 10:08:05 sid ntpd[1118]: Listen and drop on 0 v4wildcard 0.0.0.0:123
Sep 29 10:08:05 sid ntpd[1118]: Listen normally on 1 lo 127.0.0.1:123
Sep 29 10:08:05 sid ntpd[1118]: Listen normally on 2 enp0s3 192.168.1.198:123
Sep 29 10:08:05 sid ntpd[1118]: Listening on routing socket on fd #19 for
interface updates
Sep 29 10:08:05 sid ntpd[1118]: kernel reports TIME_ERROR: 0x2041: Clock
Unsynchronized
Sep 29 10:08:05 sid ntpd[1118]: kernel reports TIME_ERROR: 0x2041: Clock
Unsynchronized
Sep 29 10:08:05 sid systemd[1]: Started Network Time Service.
Sep 29 10:08:06 sid ntpd[1118]: Soliciting pool server 5.20.0.20
Sep 29 10:08:07 sid ntpd[1118]: Soliciting pool server 5.20.0.21
Sep 29 10:08:07 sid ntpd[1118]: Soliciting pool server 5.20.0.21
Sep 29 10:08:08 sid ntpd[1118]: Soliciting pool server 54.36.152.158
Sep 29 10:08:08 sid ntpd[1118]: Soliciting pool server 80.208.229.21
Sep 29 10:08:09 sid ntpd[1118]: Soliciting pool server 2001:778::120
Sep 29 10:09:16 sid ntpd[1118]: Soliciting pool server 2001:778::120
Sep 29 10:10:22 sid ntpd[1118]: Soliciting pool server 2001:778::120
Sep 29 10:11:26 sid ntpd[1118]: Soliciting pool server 2001:778::120
```
Even though ntp does not listen on ipv6:
```
# ss -putln | fgrep ntp
udp UNCONN 0 0 192.168.1.198:123 0.0.0.0:*
users:(("ntpd",pid=1118,fd=18))
udp UNCONN 0 0 127.0.0.1:123 0.0.0.0:*
users:(("ntpd",pid=1118,fd=17))
udp UNCONN 0 0 0.0.0.0:123 0.0.0.0:*
users:(("ntpd",pid=1118,fd=16))
```
-- System Information:
Debian Release: bullseye/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Kernel: Linux 5.8.0-2-amd64 (SMP w/4 CPU threads)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) (ignored: LC_ALL
set to en_US.UTF-8), LANGUAGE=en_US:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages ntp depends on:
ii adduser 3.118
ii libc6 2.31-3
ii libcap2 1:2.43-1
ii libedit2 3.1-20191231-1
ii libopts25 1:5.18.16-4
ii libssl1.1 1.1.1g-1
ii lsb-base 11.1.0
ii netbase 6.1
ii tzdata 2020a-1
Versions of packages ntp recommends:
ii perl 5.30.3-4
ii sntp 1:4.2.8p15+dfsg-1
Versions of packages ntp suggests:
pn ntp-doc <none>
-- Configuration Files:
/etc/default/ntp changed:
NTPD_OPTS='-4 -g'
-- no debconf information
