ManicalEngineer
Posts: 14
Joined: Tue Feb 23, 2016 5:13 pm

Cant ping 8.8.8.8 get "Destination Host Unreachable"

Sat Jun 15, 2019 3:41 pm

Thanks in advance,

I can ping google.com and get a response, however when I ping 8.8.8.8 i get "Destination Host Unreachable"

I'm not even sure where to start. I have another pi that works fine on the same network.

Anyone have any advice?

Thanks,

Sean

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B.Goode
Posts: 10174
Joined: Mon Sep 01, 2014 4:03 pm
Location: UK

Re: Cant ping 8.8.8.8 get "Destination Host Unreachable"

Sat Jun 15, 2019 3:52 pm

I'm not even sure where to start.

Start by providing some basic information to give volunteer helpers a chance to assist...

What model of RPi?

What Operating System?

What mode of network connection - WiFi or cabled?

Any information about the local network. At home, as part of a domestic broadband Internet service, or something in an office/business or school/college/Uni?

A recent problem, or something that has never worked?

Any changes you have made to a 'standard' operating system installation?

ManicalEngineer
Posts: 14
Joined: Tue Feb 23, 2016 5:13 pm

Re: Cant ping 8.8.8.8 get "Destination Host Unreachable"

Sat Jun 15, 2019 4:04 pm

Model: Raspberry Pi B+
OS: Raspbian GNU/Linux
Connected Via Wifi
Home Network, Wifi router connected to cable modem
Recent problem, previously ran as an in-home web sever for a django site
No changes to the standard system

Thanks!

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DougieLawson
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Re: Cant ping 8.8.8.8 get "Destination Host Unreachable"

Sat Jun 15, 2019 5:05 pm

I'll assume it's a 2018 3B+ not a 2014 B+.

Can you ping bbc.co.uk and ping 151.101.192.81?
Can you ping 8.8.4.4?
Does https://google.com/ work in a web browser?

Have you activated any firewall?
Note: Any requirement to use a crystal ball or mind reading will result in me ignoring your question.

Criticising any questions is banned on this forum.

Any DMs sent on Twitter will be answered next month.
All non-medical doctors are on my foes list.

ManicalEngineer
Posts: 14
Joined: Tue Feb 23, 2016 5:13 pm

Re: Cant ping 8.8.8.8 get "Destination Host Unreachable"

Sat Jun 15, 2019 5:36 pm

Actually is it a 2014 B+ you'd think if I'd been buying pis this long I'd have a clue right? lol

I can ping bbc.co.uk but not 151.101.192.81
I cannot ping 8.8.4.4
I can browse to google.com

No firewall

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DougieLawson
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Location: A small cave in deepest darkest Basingstoke, UK
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Re: Cant ping 8.8.8.8 get "Destination Host Unreachable"

Sat Jun 15, 2019 5:59 pm

That makes no sense whatsoever. Is your network exclusively IPv6?
Note: Any requirement to use a crystal ball or mind reading will result in me ignoring your question.

Criticising any questions is banned on this forum.

Any DMs sent on Twitter will be answered next month.
All non-medical doctors are on my foes list.

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rpdom
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Joined: Sun May 06, 2012 5:17 am
Location: Chelmsford, Essex, UK

Re: Cant ping 8.8.8.8 get "Destination Host Unreachable"

Sat Jun 15, 2019 6:01 pm

Can you post the full output of the ping bbc.co.uk please. It might give a clue.

What I get is:

Code: Select all

pi@raspberrypi:~ $ ping -c 1 bbc.co.uk
PING bbc.co.uk (151.101.0.81) 56(84) bytes of data.
64 bytes from 151.101.0.81 (151.101.0.81): icmp_seq=1 ttl=58 time=16.6 ms

--- bbc.co.uk ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 16.634/16.634/16.634/0.000 ms
Unreadable squiggle

ManicalEngineer
Posts: 14
Joined: Tue Feb 23, 2016 5:13 pm

Re: Cant ping 8.8.8.8 get "Destination Host Unreachable"

Sat Jun 15, 2019 6:06 pm

Code: Select all


PING bbc.co.uk(2a04:4e42:600::81 (2a04:4e42:600::81)) 56 data bytes
64 bytes from 2a04:4e42:600::81 (2a04:4e42:600::81): icmp_seq=1 ttl=56 time=28.9 ms
64 bytes from 2a04:4e42:600::81 (2a04:4e42:600::81): icmp_seq=2 ttl=56 time=31.2 ms
64 bytes from 2a04:4e42:600::81 (2a04:4e42:600::81): icmp_seq=3 ttl=56 time=29.3 ms
64 bytes from 2a04:4e42:600::81 (2a04:4e42:600::81): icmp_seq=4 ttl=56 time=30.0 ms
64 bytes from 2a04:4e42:600::81 (2a04:4e42:600::81): icmp_seq=5 ttl=56 time=30.6 ms
64 bytes from 2a04:4e42:600::81 (2a04:4e42:600::81): icmp_seq=6 ttl=56 time=38.0 ms
64 bytes from 2a04:4e42:600::81 (2a04:4e42:600::81): icmp_seq=7 ttl=56 time=31.7 ms
64 bytes from 2a04:4e42:600::81 (2a04:4e42:600::81): icmp_seq=8 ttl=56 time=30.9 ms
64 bytes from 2a04:4e42:600::81 (2a04:4e42:600::81): icmp_seq=9 ttl=56 time=29.7 ms
64 bytes from 2a04:4e42:600::81 (2a04:4e42:600::81): icmp_seq=10 ttl=56 time=30.0 ms
64 bytes from 2a04:4e42:600::81 (2a04:4e42:600::81): icmp_seq=11 ttl=56 time=29.4 ms
64 bytes from 2a04:4e42:600::81 (2a04:4e42:600::81): icmp_seq=12 ttl=56 time=30.2 ms
64 bytes from 2a04:4e42:600::81 (2a04:4e42:600::81): icmp_seq=13 ttl=56 time=29.5 ms
64 bytes from 2a04:4e42:600::81 (2a04:4e42:600::81): icmp_seq=14 ttl=56 time=29.1 ms
^C
--- bbc.co.uk ping statistics ---
14 packets transmitted, 14 received, 0% packet loss, time 13020ms
rtt min/avg/max/mdev = 28.929/30.661/38.083/2.215 ms

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rpdom
Posts: 17022
Joined: Sun May 06, 2012 5:17 am
Location: Chelmsford, Essex, UK

Re: Cant ping 8.8.8.8 get "Destination Host Unreachable"

Sat Jun 15, 2019 6:39 pm

It looks like Doug was right. You're only using IPv6, so pinging an IPv4 address isn't going to work.
Unreadable squiggle

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