Issues to connect to email server when using a wired internet connection [Solved]

[Masi]

Deactivated IPv4 and only had IPv6 activated. Not possible to open a website or email using wired or wifi connection. Seems IPv6 does not work at all. However, I do see that IP address are assigned when I run the below command. Is this expected?

Code: Select all

$ ip address
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 00:d2:b1:d4:90:1b brd ff:ff:ff:ff:ff:ff
    inet6 2a02:908:175:5280:1f4c:c8fd:ec11:3ad2/128 scope global dynamic noprefixroute 
       valid_lft 604780sec preferred_lft 604780sec
    inet6 2a02:908:175:5280:9143:4eb9:735e:2603/64 scope global dynamic noprefixroute 
       valid_lft 86399sec preferred_lft 43199sec
    inet6 fe80::b340:ec5c:b203:c5e/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 14:4f:8a:34:cb:f5 brd ff:ff:ff:ff:ff:ff
    inet6 2a02:908:175:5280:80b1:1923:4b6a:ccd3/128 scope global dynamic noprefixroute 
       valid_lft 604789sec preferred_lft 604789sec
    inet6 2a02:908:175:5280:7493:e6ee:c06c:41f3/64 scope global dynamic noprefixroute 
       valid_lft 86399sec preferred_lft 43199sec
    inet6 fe80::243b:5ce5:f0eb:22ea/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever

[CharlesV]

There are a few things at play here.

First, I dont think the issue is really IPv6 - I think its up the chain... even if your router hands you an ipv6 address... it does NOT mean that that will work properly. Your upstream routers may or may not work ipv6 properly and not all devices will handle them.

Second, my experience is that your in a half world with ipv6. There are several different strategies that ISP's take to make it all work.. And then you have THEIR bridges and translations to contend with. The result is a VERY poor adoption of ipv6.

Your much better to turn it off if your experiencing issues or slow networking - imo ! Someday... it will be 'real' .. but it certainly is not real for everyone at this time.

[Masi]

Thank you very much for your help and explanation.

[CharlesV]

You are very welcome.