I have installed Linux Mint 18 64 bit and noticed Google and Youtube and others loading flawlessly (even HD videos play) but some sites like Wikipedia don't show up even though the tabs in Mozilla either show "loading" or show "wikipedia - the free encyclopedia" but then the site doesn't appear.
The computer loads some sites but doesn't load others, and they don't change – if site A doesn't load then it doesn't load next time either. If site B loads then it loads afterwards too.
Last time I checked the internet connection in a different computer – with windows – everything worked, so it's not ISP's fault.
It does this even with ufw disabled.
Doesn't work with Mint liveDVD either. It's the same thing.
If I open up a web proxy and type in Wikipedia then it goes there. Same thing with other browsers.
After typing wget wikipedia.org:
--2016-07-20 21:30:40-- http://wikipedia.org/
Resolving wikipedia.org (wikipedia.org)... 91.198.174.192, 2620:0:862:ed1a::1
Connecting to wikipedia.org (wikipedia.org)|91.198.174.192|:80... connected.
HTTP request sent, awaiting response... 301 TLS Redirect
Location: https://wikipedia.org/ [following]
--2016-07-20 21:30:40-- https://wikipedia.org/
Connecting to wikipedia.org (wikipedia.org)|91.198.174.192|:443... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: https://www.wikipedia.org/ [following]
--2016-07-20 21:30:40-- https://www.wikipedia.org/
Resolving www.wikipedia.org (www.wikipedia.org)... 91.198.174.192,
2620:0:862:ed1a::1
Connecting to www.wikipedia.org (www.wikipedia.org)|91.198.174.192|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [text/html]
Saving to: ‘index.html’
index.html [<=> ] 0 --.-KB/s
..and it stops and never continues. I had to interrupt it.
The index.html I found in my home folder is totally empty BUT at the tab it says "Wikipedia".
dig wikipedia.org output is:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> wikipedia.org
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 15688
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;wikipedia.org. IN A
;; ANSWER SECTION:
wikipedia.org. 343 IN A 91.198.174.192
;; Query time: 21 msec
;; SERVER: 193.231.252.1#53(193.231.252.1)
;; WHEN: Wed Jul 20 21:38:59 EEST 2016
;; MSG SIZE rcvd: 58
After ping -c 3 wikipedia.org:
PING wikipedia.org (91.198.174.192) 56(84) bytes of data.
64 bytes from text-lb.esams.wikimedia.org (91.198.174.192): icmp_seq=1 ttl=59 time=50.5 ms
64 bytes from text-lb.esams.wikimedia.org (91.198.174.192): icmp_seq=2 ttl=59 time=48.3 ms
64 bytes from text-lb.esams.wikimedia.org (91.198.174.192): icmp_seq=3 ttl=59 time=49.4 ms
--- wikipedia.org ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 48.342/49.475/50.594/0.954 ms
After ping -c 3 91.198.174.192:
PING 91.198.174.192 (91.198.174.192) 56(84) bytes of data.
64 bytes from 91.198.174.192: icmp_seq=1 ttl=59 time=50.6 ms
64 bytes from 91.198.174.192: icmp_seq=2 ttl=59 time=50.7 ms
64 bytes from 91.198.174.192: icmp_seq=3 ttl=59 time=48.2 ms
--- 91.198.174.192 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 48.267/49.898/50.796/1.155 ms
It's not an MTU issue.
Edit: At the suggestion of mrwhale I will post the output of route -n, ip route, and cat /etc/resolv.conf in both the usable distro and the not-so-usable distro. I mentioned that internet works on a web proxy and he asked me to post this.
On the usable distro
route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.0.0.1 0.0.0.0 UG 0 0 0 ppp0
10.0.0.1 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0
ip route
default via 10.0.0.1 dev ppp0 proto static
10.0.0.1 dev ppp0 proto kernel scope link src (here it showed my IP address)
cat /etc/resolv.conf
Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 127.0.1.1
On the current broken distro (Linux Mint)
route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.0.0.1 0.0.0.0 UG 100 0 0 ppp0
10.0.0.1 0.0.0.0 255.255.255.255 UH 100 0 0 ppp0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 ppp0
ip route
default via 10.0.0.1 dev ppp0 proto static metric 100
10.0.0.1 dev ppp0 proto kernel scope link src (my IP address) metric 100
169.254.0.0/16 dev ppp0 scope link metric 1000
cat /etc/resolv.conf
Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 193.231.252.1
nameserver 213.154.124.1
nameserver 127.0.1.1
