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Disable LLMNR protocol in default builds #28263

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Commits on Jul 5, 2023

  1. Disable LLMNR protocol in default builds

    Even Microsoft has disabled resolution over LLMNR protocol in their
    Windows 10. I have found that when testing something and wondered, why
    mDNS works but LLMNR does not on Windows machine in our network. Found
    mDNS is now preferred and updated systems get it disabled.
    
    Found an article about that is by design, not conincidental:
    https://techcommunity.microsoft.com/t5/networking-blog/aligning-on-mdns-ramping-down-netbios-name-resolution-and-llmnr/ba-p/3290816
    
    Because the way systemd-resolved is breaking some operations in DNS, I
    would like it disabled by default. Multicast DNS is preferred solution
    and has separate .local domain. It makes it easier to decide which
    queries should be directed to multicast resolution. Legacy users on
    Windows 7 should be forced to enable it, if they want to use it.
    
    Related: systemd#23622
    pemensik committed Jul 5, 2023
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