Tests main.bind_address_resolution and main.bind_multiple_addresses_resolution fail on Debian builders

On the official Debian buildd hosts rebuilds of MariaDB occasionally fail on MTR tests:

> main.bind_multiple_addresses_resolution w2 [ fail ]
> Test ended at 2024-07-28 18:37:49
>
> CURRENT_TEST: main.bind_multiple_addresses_resolution
>
>
> Failed to start mysqld.1
> mysqltest failed but provided no output
>
>
> - saving '/<<PKGBUILDDIR>>/builddir/mysql-test/var/2/log/main.bind_multiple_addresses_resolution/' to '/<<PKGBUILDDIR>>/builddir/mysql-test/var/log/main.bind_multiple_addresses_resolution/'
>
> Retrying test main.bind_multiple_addresses_resolution, attempt(2/3)...
>
> worker[02] > Restart - not started
> ***Warnings generated in error logs during shutdown after running tests: main.bind_multiple_addresses_resolution
>
> 2024-07-28 18:37:49 0 [ERROR] Can't start server: Bind on TCP/IP port. Got error: 98: Address already in use
> 2024-07-28 18:37:49 0 [ERROR] Do you already have another server running on port: 16100 ?
> 2024-07-28 18:37:49 0 [ERROR] Aborting

> main.bind_address_resolution w1 [ fail ]
> Test ended at 2024-07-28 18:37:49
>
> CURRENT_TEST: main.bind_address_resolution
>
>
> Failed to start mysqld.1
> mysqltest failed but provided no output
>
>
> - skipping '/<<PKGBUILDDIR>>/builddir/mysql-test/var/1/log/main.bind_address_resolution/'
>
> Retrying test main.bind_address_resolution, attempt(2/3)...
>
> worker[01] > Restart - not started
> ***Warnings generated in error logs during shutdown after running tests: main.bind_address_resolution
>
> 2024-07-28 18:37:49 0 [ERROR] Can't start server: Bind on TCP/IP port. Got error: 98: Address already in use
> 2024-07-28 18:37:49 0 [ERROR] Do you already have another server running on port: 16000 ?
> 2024-07-28 18:37:49 0 [ERROR] Aborting

This is still happening with MariaDB 11.4, thus filing bug upstream for help.

Details in Debian bug https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1052838