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Backup of VMware VMs fails when using an Ubuntu-based Linux VMware Proxy, and the VMware environment is added to Veeam with an FQDN ending in .local (e.g., esxi.somedomain.local).
This issue occurs because .local is only intended for multicast DNS (mDNS), and Ubuntu's default configuration prevents the use of .local for unicast DNS. As a result, the Ubuntu-based machine does not contact the network's DNS server when attempting to resolve .local servers.
The appropriate solution is to comply with networking standards and not use .local for unicast DNS. Per RFC 6762 (2013), .local is a special-use domain name, and the advice from the Internet Engineering Task Force (IETF), "we [IETF] recommend against using ".local" as a private Unicast DNS top-level domain." For more information, review:
Support Statement The following proposed workaround is an OS-level modification to alter behavior that is as designed by the developers of the Ubuntu distro. Veeam does not directly support this modification, and the information is only shared here as a stop-gap workaround. Customers are strongly encouraged to ensure their networks comply with networking standards.
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