Unable to completely transfer root zone

[Stephane Bortzmeyer]

On Mon, Feb 10, 2020 at 02:32:55PM -0500,
 Warren Kumari <warren at kumari.net> wrote 
 a message of 70 lines which said:

> Also, can you try:
> dig +tcp . axfr @192.0.32.132
> dig +tcp . axfr @192.0.47.132
> dig +tcp . axfr @b.root-servers.net
> 
> (no, I'm not really sure why trying with the first 2 IPs instead of
> hostname

Because you know that IPv6 and IPv4 may exhibit different issues.