Что случилось с ttl?

[tahr]

Не пойму как ttl смог оказаться больше установленного в системе.
Известно, что в Ubuntu по умолчанию ttl=64. Я у себя в системе выставил ttl=65, так мне надо. Сейчас наблюдаю такое:

(Нажмите, чтобы показать/скрыть)

Код: [Выделить]

mart@xenial:~$ uname -a
Linux xenial 4.4.0-137-generic #163-Ubuntu SMP Mon Sep 24 13:14:43 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
mart@xenial:~$ ping 127.0.0.1
PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
64 bytes from 127.0.0.1: icmp_seq=1 ttl=65 time=0.189 ms
^C
--- 127.0.0.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.189/0.189/0.189/0.000 ms
mart@xenial:~$ ping ya.ru
PING ya.ru (87.250.250.242) 56(84) bytes of data.
64 bytes from ya.ru (87.250.250.242): icmp_seq=1 ttl=42 time=58.9 ms
^C
--- ya.ru ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 58.969/58.969/58.969/0.000 ms
mart@xenial:~$ ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=109 time=58.4 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=109 time=66.5 ms
C64 bytes from 8.8.8.8: icmp_seq=3 ttl=109 time=65.5 ms
64 bytes from 8.8.8.8: icmp_seq=4 ttl=109 time=57.3 ms
64 bytes from 8.8.8.8: icmp_seq=5 ttl=109 time=57.1 ms
^C
--- 8.8.8.8 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4006ms
rtt min/avg/max/mdev = 57.106/60.998/66.527/4.149 ms

Как такое может быть не понимаю. Раньше и от Гугла всегда было меньше 64. А сейчас ...
 
Пользователь добавил сообщение 12 Октября 2018, 20:20:11:Time to live:
Максимальное значение TTL=255. Обычное начальное значение TTL=64 (Linux, Mac, Android, iOS), TTL=128 (Windows).

Поскольку ответа на вопрос пока нет, интересны были бы замеры разных пользователей, из разных стран. Ну или хотя бы предположения как пинг к Гуглу мог показать такую цифру (число).
ТС не появлялся на Форуме более трех месяцев по состоянию на 12/02/2020 (последняя явка: 13/08/2019). Модератором раздела принято решение закрыть тему.
--zg_nico

[zse]

    — Я не очень во всём этом понимаю… но вот посмотрите как у меня…

(Нажмите, чтобы показать/скрыть)

Код: (bash) [Выделить]

↓↓↓                  /home/fjf
uname -a
Linux fjf-ThinkCentre-M57 4.4.0-137-generic #163~14.04.1-Ubuntu SMP Mon Sep 24 17:13:32 UTC 2018 i686 i686 i686 GNU/Linux
↓↓↓                  /home/fjf
ping 127.0.0.1
PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.065 ms
64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.045 ms
64 bytes from 127.0.0.1: icmp_seq=3 ttl=64 time=0.051 ms
64 bytes from 127.0.0.1: icmp_seq=4 ttl=64 time=0.047 ms
64 bytes from 127.0.0.1: icmp_seq=5 ttl=64 time=0.059 ms
64 bytes from 127.0.0.1: icmp_seq=6 ttl=64 time=0.058 ms
^C
--- 127.0.0.1 ping statistics ---
6 packets transmitted, 6 received, 0% packet loss, time 4996ms
rtt min/avg/max/mdev = 0.045/0.054/0.065/0.008 ms
↓↓↓                  /home/fjf
ping ya.ru
PING ya.ru (87.250.250.242) 56(84) bytes of data.
64 bytes from ya.ru (87.250.250.242): icmp_seq=1 ttl=50 time=134 ms
64 bytes from ya.ru (87.250.250.242): icmp_seq=2 ttl=50 time=133 ms
64 bytes from ya.ru (87.250.250.242): icmp_seq=3 ttl=50 time=134 ms
64 bytes from ya.ru (87.250.250.242): icmp_seq=4 ttl=50 time=134 ms
64 bytes from ya.ru (87.250.250.242): icmp_seq=5 ttl=50 time=133 ms
64 bytes from ya.ru (87.250.250.242): icmp_seq=6 ttl=50 time=135 ms
64 bytes from ya.ru (87.250.250.242): icmp_seq=7 ttl=50 time=135 ms
^C
--- ya.ru ping statistics ---
7 packets transmitted, 7 received, 0% packet loss, time 6003ms
rtt min/avg/max/mdev = 133.894/134.454/135.184/0.645 ms
↓↓↓                  /home/fjf
ping 8.8.8.
ping: unknown host 8.8.8.
↓↓↓                  /home/fjf
ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=123 time=10.4 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=123 time=10.0 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=123 time=9.23 ms
64 bytes from 8.8.8.8: icmp_seq=4 ttl=123 time=9.59 ms
64 bytes from 8.8.8.8: icmp_seq=5 ttl=123 time=10.4 ms
64 bytes from 8.8.8.8: icmp_seq=6 ttl=123 time=10.5 ms
64 bytes from 8.8.8.8: icmp_seq=7 ttl=123 time=11.1 ms
64 bytes from 8.8.8.8: icmp_seq=8 ttl=123 time=10.0 ms
^C
--- 8.8.8.8 ping statistics ---
8 packets transmitted, 8 received, 0% packet loss, time 7010ms
rtt min/avg/max/mdev = 9.232/10.181/11.141/0.565 ms
↓↓↓                  /home/fjf

2018 Oct 12; 03:48 PM; Oakville, ON, Canada.

[Lex Alexov]

У меня ttl=64 фиксирован на модеме(обход блокировки оператора), и в системе установлен ttl=65(на случай раздачи Wi-Fi cо смартфона)

(Нажмите, чтобы показать/скрыть)

Код: [Выделить]

$ ping -c 5 127.0.0.1
PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
64 bytes from 127.0.0.1: icmp_seq=1 ttl=65 time=0.086 ms
64 bytes from 127.0.0.1: icmp_seq=2 ttl=65 time=0.086 ms
64 bytes from 127.0.0.1: icmp_seq=3 ttl=65 time=0.108 ms
64 bytes from 127.0.0.1: icmp_seq=4 ttl=65 time=0.092 ms
64 bytes from 127.0.0.1: icmp_seq=5 ttl=65 time=0.156 ms

--- 127.0.0.1 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4091ms
rtt min/avg/max/mdev = 0.086/0.105/0.156/0.028 ms
$ ping -c 5 ya.ru
PING ya.ru (87.250.250.242) 56(84) bytes of data.
64 bytes from ya.ru (87.250.250.242): icmp_seq=1 ttl=64 time=76.9 ms
64 bytes from ya.ru (87.250.250.242): icmp_seq=2 ttl=64 time=58.5 ms
64 bytes from ya.ru (87.250.250.242): icmp_seq=3 ttl=64 time=76.7 ms
64 bytes from ya.ru (87.250.250.242): icmp_seq=4 ttl=64 time=64.9 ms
64 bytes from ya.ru (87.250.250.242): icmp_seq=5 ttl=64 time=64.6 ms

--- ya.ru ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4005ms
rtt min/avg/max/mdev = 58.562/68.391/76.990/7.305 ms
$ ping -c 5 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=64 time=39.0 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=64 time=53.9 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=64 time=52.9 ms
64 bytes from 8.8.8.8: icmp_seq=4 ttl=64 time=51.8 ms
64 bytes from 8.8.8.8: icmp_seq=5 ttl=64 time=50.2 ms

--- 8.8.8.8 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4004ms
rtt min/avg/max/mdev = 39.035/49.601/53.967/5.426 ms


Если отключить фиксацию ttl на модеме, то результат будет таким:

(Нажмите, чтобы показать/скрыть)

Код: [Выделить]

$ ping -c 5 127.0.0.1
PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
64 bytes from 127.0.0.1: icmp_seq=1 ttl=65 time=0.090 ms
64 bytes from 127.0.0.1: icmp_seq=2 ttl=65 time=0.059 ms
64 bytes from 127.0.0.1: icmp_seq=3 ttl=65 time=0.073 ms
64 bytes from 127.0.0.1: icmp_seq=4 ttl=65 time=0.101 ms
64 bytes from 127.0.0.1: icmp_seq=5 ttl=65 time=0.102 ms

--- 127.0.0.1 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4049ms
rtt min/avg/max/mdev = 0.059/0.085/0.102/0.016 ms
$ ping -c 5 ya.ru
PING ya.ru (87.250.250.242) 56(84) bytes of data.
64 bytes from ya.ru (87.250.250.242): icmp_seq=1 ttl=49 time=48.8 ms
64 bytes from ya.ru (87.250.250.242): icmp_seq=2 ttl=49 time=63.1 ms
64 bytes from ya.ru (87.250.250.242): icmp_seq=3 ttl=49 time=61.7 ms
64 bytes from ya.ru (87.250.250.242): icmp_seq=4 ttl=49 time=44.2 ms
64 bytes from ya.ru (87.250.250.242): icmp_seq=5 ttl=49 time=44.5 ms

--- ya.ru ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4006ms
rtt min/avg/max/mdev = 44.224/52.509/63.153/8.300 ms
$  ping -c 5 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=45 time=54.7 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=45 time=52.8 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=45 time=64.8 ms
64 bytes from 8.8.8.8: icmp_seq=4 ttl=45 time=40.9 ms
64 bytes from 8.8.8.8: icmp_seq=5 ttl=45 time=49.7 ms

--- 8.8.8.8 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4005ms
rtt min/avg/max/mdev = 40.969/52.645/64.882/7.731 ms


[makarin]

Вот мои результаты теста:

(Нажмите, чтобы показать/скрыть)

Код: [Выделить]

userr1@rr1:~$ ping -c 5 127.0.0.1
PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.038 ms
64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.045 ms
64 bytes from 127.0.0.1: icmp_seq=3 ttl=64 time=0.039 ms
64 bytes from 127.0.0.1: icmp_seq=4 ttl=64 time=0.039 ms
64 bytes from 127.0.0.1: icmp_seq=5 ttl=64 time=0.041 ms

--- 127.0.0.1 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 3996ms
rtt min/avg/max/mdev = 0.038/0.040/0.045/0.006 ms
userr1@rr1:~$ ping -c 5 ya.ru
PING ya.ru (87.250.250.242) 56(84) bytes of data.
64 bytes from ya.ru (87.250.250.242): icmp_seq=1 ttl=56 time=32.9 ms
64 bytes from ya.ru (87.250.250.242): icmp_seq=2 ttl=56 time=32.9 ms
64 bytes from ya.ru (87.250.250.242): icmp_seq=3 ttl=56 time=32.9 ms
64 bytes from ya.ru (87.250.250.242): icmp_seq=4 ttl=56 time=32.2 ms
64 bytes from ya.ru (87.250.250.242): icmp_seq=5 ttl=56 time=32.9 ms

--- ya.ru ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4005ms
rtt min/avg/max/mdev = 32.258/32.806/32.963/0.357 ms
userr1@rr1:~$ ping -c 5 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=119 time=24.7 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=119 time=24.7 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=119 time=24.7 ms
64 bytes from 8.8.8.8: icmp_seq=4 ttl=119 time=24.7 ms
64 bytes from 8.8.8.8: icmp_seq=5 ttl=119 time=24.7 ms

--- 8.8.8.8 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4006ms
rtt min/avg/max/mdev = 24.728/24.756/24.788/0.022 ms