Unable to connect to most websites. Can only connect to google, yahoo, and openwrt.org

Installing and Using OpenWrt
1

I installed Open Wrt on my Netgear R6350 using openwrt-19.07.7-ramips-mt7621-netgear_r6350-squashfs-factory.img. Everything was working before but now I am experiencing problems.

I thought that I was experiencing DNS issues, but now I am not so sure. I can connect to the following websites: gooogle , yahoo , facebook, youtube, and openwrt.org (so basically all of the big name sites).

I am unable to connect to most other websites including but not limited to duckduckgo.com, chase , xfinity , microsoft, citi., twitter, and reddit. The message I get is "The connection has timed out The server at www.reddit.com is taking too long to respond."
So not exactly an http error.

Yes, I have tried in multiple browsers including chrome, firefox, and icecat. I have also tested in links, elinks, and lynx.
Yes, I have tried private browsing or incognito mode.
Yes, I have checked firewall configuration.

Here is where things get weird and why I do not think it is a dns problem. I can ping the above mentioned sites that do work in luci.

PING openwrt.org (139.59.209.225): 56 data bytes
64 bytes from 139.59.209.225: seq=0 ttl=44 time=113.669 ms
64 bytes from 139.59.209.225: seq=1 ttl=44 time=113.524 ms
64 bytes from 139.59.209.225: seq=2 ttl=44 time=113.467 ms
64 bytes from 139.59.209.225: seq=3 ttl=44 time=113.948 ms
64 bytes from 139.59.209.225: seq=4 ttl=44 time=113.474 ms

But when I try to ping chase.com from the openwrt router, it fails, however the ip address shows up, so, therefore I believe the DNS is working.

PING chase.com **(159.53.224.21)**: 56 data bytes

--- chase.com ping statistics ---
5 packets transmitted, 0 packets received, 100% packet loss

I have added my isp dns hosts along with google and cloudflaire to /tmp/resolv.conf.auto.
I have also added dns hosts to the interfaces and none of that worked.

When I run the google speed test, I get 78.7 Mbps download.

Does anyone know why I cannot reach most internet sites. How can I solve this problem?
I would deeply appreciate any help or advice on this as this problem is quite weird and unique.

3

The working set of domains all have in common that they're also available via IPv6, while I haven't checked all domains of your non-working bin, those seem to be IPv4-only…
While this would hint at potential issues with your IPv4 connectivity, your ping trace suggests that to be working.

Just to be sure, I'd do a another factory reset (firstboot) before debugging much further.

2 Likes
4

It does look like you are on to something. However, I found an anomaly. While I cannot visit reddit.com from any browser but I can ping it from the openwrt router despite it having no IPv6.

Server:		75.75.75.75
Address:	75.75.75.75#53

Server:		75.75.75.75
Address:	75.75.75.75#53

Name:      reddit.com
Address 1: 151.101.65.140
Address 2: 151.101.129.140
Address 3: 151.101.1.140
Address 4: 151.101.193.140
*** Can't find reddit.com: No answer


PING reddit.com (151.101.1.140): 56 data bytes
64 bytes from 151.101.1.140: seq=0 ttl=58 time=8.715 ms
64 bytes from 151.101.1.140: seq=1 ttl=58 time=9.022 ms
64 bytes from 151.101.1.140: seq=2 ttl=58 time=8.453 ms
64 bytes from 151.101.1.140: seq=3 ttl=58 time=8.549 ms
64 bytes from 151.101.1.140: seq=4 ttl=58 time=10.747 ms

--- reddit.com ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max = 8.453/9.097/10.747 ms
5

it does look like I am only given a public ipv6 address. I am not given an ipv4 address and I cannot connect to ipv4 websites. Does anyone know how to correct this?

6
  • Only given by your ISP to the router (as seen on the "Upstream" section of the web managment Status page)?
  • Or only given internally from router to PC / device?

Your text makes it seem like to mean the first of these - but worth checking :).

IanC

7

Thank you for your response, Ian. I am new to networking so I am confused by the fact that the hosts on my network get internal/private IPv4 addresses (192.168.1.**) AND IPv6 addresses.

But when I go to google and type in "what is my ip address?", I get an IPv6 address.

As for the openwrt router. It seems to only get internal IPv4 address.

root@OpenWrt:~# ifconfig -a | grep 'inet ' 
          inet addr:192.168.1.1  Bcast:192.168.1.255  Mask:255.255.255.0
          inet addr:127.0.0.1  Mask:255.0.0.0
root@OpenWrt:~#
8

Do you see wan and wan6 interfaces in ifconfig, or on the LUCI Network->Interfaces page? I have wan using PPPoE for IPv4, but you might need to connect to your ISP a different way.

9

This is normal, If you have both a IPv4 and a IPv6 most sites only show the IPv6 address they started doing this a couple of years ago.

You might have better luck finding your IPv4 by searching Google for "whats my ipv4 address"