nslookup não retorna o esperado

Olá!

O 'nslookup' retorna algo diferente do que aparece na aula "4 - Wireshark http final" . Aqui, utilizando o Ubuntu, a saída é a seguinte:

$ nslookup www.buscape.com.br
Server:        127.0.0.53
Address:    127.0.0.53#53

Non-authoritative answer:
www.buscape.com.br    canonical name = buscape_company_ptr.zst.com.br.
buscape_company_ptr.zst.com.br    canonical name = dh8bafpwuwdxw.cloudfront.net.
Name:    dh8bafpwuwdxw.cloudfront.net
Address: 13.227.120.16
Name:    dh8bafpwuwdxw.cloudfront.net
Address: 13.227.120.11
Name:    dh8bafpwuwdxw.cloudfront.net
Address: 13.227.120.36
Name:    dh8bafpwuwdxw.cloudfront.net
Address: 13.227.120.24
Name:    dh8bafpwuwdxw.cloudfront.net
Address: 2600:9000:21e8:ac00:19:3c2f:2500:93a1
Name:    dh8bafpwuwdxw.cloudfront.net
Address: 2600:9000:21e8:2600:19:3c2f:2500:93a1
Name:    dh8bafpwuwdxw.cloudfront.net
Address: 2600:9000:21e8:6c00:19:3c2f:2500:93a1
Name:    dh8bafpwuwdxw.cloudfront.net
Address: 2600:9000:21e8:9600:19:3c2f:2500:93a1
Name:    dh8bafpwuwdxw.cloudfront.net
Address: 2600:9000:21e8:c800:19:3c2f:2500:93a1
Name:    dh8bafpwuwdxw.cloudfront.net
Address: 2600:9000:21e8:7400:19:3c2f:2500:93a1
Name:    dh8bafpwuwdxw.cloudfront.net
Address: 2600:9000:21e8:8a00:19:3c2f:2500:93a1
Name:    dh8bafpwuwdxw.cloudfront.net
Address: 2600:9000:21e8:b000:19:3c2f:2500:93a1

O que pode estar ocorrendo?

Já tentei a sugestão do tópico https://cursos.alura.com.br/forum/topico-resposta-diferente-44091, mas no meu /etc/NetworkManager/NetworkManager.conf só tem:

[main]
plugins=ifupdown,keyfile

[ifupdown]
managed=false

[device]
wifi.scan-rand-mac-address=no

Então não teria a opção para desmarcar/ignorar a linha

dns=dnsmasq