Boa noite
Ao realizar o procedimento que o professor ensina na aula, apareceu o seguinte código
C:\Users\Rhenan>nslookup www.facebook.com DNS request timed out. timeout was 2 seconds. Servidor: UnKnown Address: 2001:db8::35
DNS request timed out. timeout was 2 seconds. DNS request timed out. timeout was 2 seconds. DNS request timed out. timeout was 2 seconds. DNS request timed out. timeout was 2 seconds. *** O tempo limite da solicitação para UnKnown expirou
qual motivo?