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  1. [SOLVED] Re: IPv6 on Ubuntu router; can't access LAN

    Nice one! Thanks for the update. I must remember that.
  2. [SOLVED] Re: IPv6 on Ubuntu router; can't access LAN

    In future, please use code tags when posting netplan config - indentation is crucial. If you "go advanced" when composing, there is a '#' button that enters code tags.

    You say IPv6 ping isn't...
  3. [ubuntu_budgie] Re: Configured Dns over TLS ..... Is this good for privacy?

    Clearly, you have not disabled IPv6. It's still working.

    I see no reason to disable IPv6. More and more things are using IPv6, and over time, some services are going to become IPv6 only.
    If both...
  4. [xubuntu] Re: How do I create a back that allows me to retain my desktop and settings

    The vast majority of that list is your personal settings, stored inside your home folder. Backing up /home will capture that. That's what I do.
    Actually, I use a separate home partition so I can...
  5. [server] Re: CIFS: Can't create file because exists, cannot see/delete it because it doesn't

    I think I may have seen something similar when there was confusion about the spelling of a filename - upper/lower case. E.g. on a filesystem that confuses upper and lower case letters, file "foo" may...
  6. Re: Connection refused when trying to SSH to my Ubuntu 20.04 from other network

    "Conection refused" is different to getting the username/password wrong. Connection refused happens when the TCP connection is actively refused by the OS (or possibly by networking kit somewhere in...
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    [SOLVED] Re: Seeking advice on Netdata

    With regards to SNMP - if you use a product that can slurp data from the prometheus node exporter, that is a lot easier than using SNMP.
    The node exporter finds pretty much you might be interested...
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    [SOLVED] Re: Seeking advice on Netdata

    You may find a reasonable answer by installing prometheus (stats gathering database) and grafana (displays dashboards based on data collected by prometheus) on a server, and installing prometheus...
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    [SOLVED] Re: Seeking advice on Netdata

    I had not heard of Netdata, so I had a look at their web site. It looks very slick and impressive. The screenshots look like grafana dashboards to me, no surprises there.
    The claims of automatic...
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    Re: How did suspend work?

    Doh!
    Yes, I was thinking of Hibernate. Which isn't even listed as an option.
    Thanks for putting me straight.
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    How did suspend work?

    Not a support question, just puzzled:

    I have known for a long time that suspend uses swap space for saving RAM. So swap has to be bigger than RAM for suspend to work.

    I have 8G RAM and 2G swap....
  12. [ubuntu] Re: Linux beginner with a mind-numbing problem!

    Welcome to the forum.

    iptables -A OUTPUT -t mangle -p tcp -m tcp --sport 22 -j MARK --set-xmark 3
    ip rule add fwmark 3 table 3
    ip r a default via 169.254.0.1 dev eth0 table 3
    What the above is...
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    [ubuntu] Re: Two Ethernet Ports - Swap/Disappear

    I think I'm out of my depth now. I don't understand why they are not getting allocated the hardware-based names (even Ubuntu 18.04 does that - the laptop I'm on right now has an interface...
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    [SOLVED] Re: standard I/O streams

    I found this - hope it helps. The file descriptor is local to a process, and somewhere, there is a lookup from the process's descriptor to the real file structure....
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    [ubuntu] Re: Two Ethernet Ports - Swap/Disappear

    OK, that's progress. We know that the ethernet ports are switching names. I think this is because hardware discovery is done in parallel, and so hardware is not always discovered (and named) in the...
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    Re: Why is ping command not resolving names?

    Incidentally, on a machine with both protocols available, you can use "ping -4" or "ping -6" to choose which protocol to use.
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    Re: Why is ping command not resolving names?

    You have no way of knowing if they are the same server, except that it is unlikely that on server has two IPv6 addresses. In practice there is probably a server farm behind each address.
    That...
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    Re: Why is ping command not resolving names?

    Given a choice, IPv6 should be preferred over IPv4, so I guess the purple screenshot doesn't have a working IPv6 internet connection.
    Try the command:

    host uol.com.br
    and it will tell you the IP...
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    Re: Why is ping command not resolving names?

    That looks resolved to me. What's the problem?
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    [ubuntu] Re: Two Ethernet Ports - Swap/Disappear

    Well, they didn't swap identities this time, and DHCP worked. I guess we have to wait until it gives us a clue.

    Your posts would look better if you use code tags instead of quote. If you click Go...
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    [ubuntu] Re: Two Ethernet Ports - Swap/Disappear

    That's a good start. It will be interesting to see if the names swap ports when you have trouble - you will be able to check because the MAC address will definitely stay with the port.
    I would...
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    [ubuntu] Re: Two Ethernet Ports - Swap/Disappear

    A basic question: Is it the ID (eth0 vs en0) that moves from one port to the other? So that for instance, the working interface is always eth0 or always en0 regardless of which port that is.
    Or...
  23. [server] Re: Spoofed SSH-attacks - how to find source?

    Similar to SeijiSensei, I would suggest using a wireguard VPN. Wireguard is great - easy to set up, and undetectable in that it won't give any response to packets that don't have the right key. Only...
  24. [server] Re: Spoofed SSH-attacks - how to find source?

    They cannot spoof the IP because ssh needs two-way traffic to work.
    But they can and do use distributed hacking from the thousands of machines they have compromised, in order to get round things...
  25. [ubuntu] Re: What's the best Ubuntu Video movie player?

    I rather like mpv. It doesn't really have a GUI, just a window with the video in it - use keyboard controls to pause, step etc.
    It seems to handle many formats very well, but the interface may not...
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