Impossible d'envoyer un ping à l'hôte local après avoir migré vers un nouveau Mac

Après avoir migré vers un nouveau MacBook Pro, je ne peux plus faire de ping. localhost .

J'ai déjà essayé de changer mon /etc/hosts alors qu'il l'était déjà auparavant.

$ host localhost
localhost has address 127.0.0.1
localhost has IPv6 address ::1

$ ping localhost.
PING localhost (127.0.0.1): 56 data bytes
64 bytes from 127.0.0.1: icmp_seq=0 ttl=64 time=0.098 ms
64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.081 ms

Pinging localhost. fonctionne d'une manière ou d'une autre, mais je ne comprends pas pourquoi.

Si je redémarre le système, le problème n'est pas résolu. localhost encore, mais si je ping localhost. puis ping localhost commence à fonctionner. Je ne sais pas si cela peut aider quelqu'un qui a le même problème.

Quel est le problème ?

$ ping localhost
ping: cannot resolve localhost: Unknown host
$ ping localhost.
PING localhost (127.0.0.1): 56 data bytes
64 bytes from 127.0.0.1: icmp_seq=0 ttl=64 time=0.072 ms
64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.084 ms
64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.077 ms
64 bytes from 127.0.0.1: icmp_seq=3 ttl=64 time=0.073 ms
^C
--- localhost ping statistics ---
4 packets transmitted, 4 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 0.072/0.076/0.084/0.005 ms
$ ping localhost
PING localhost (127.0.0.1): 56 data bytes
64 bytes from 127.0.0.1: icmp_seq=0 ttl=64 time=0.070 ms
64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.072 ms
64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.088 ms
64 bytes from 127.0.0.1: icmp_seq=3 ttl=64 time=0.082 ms
^C
--- localhost ping statistics ---
4 packets transmitted, 4 packets received, 0.0% packet loss

plus de résultats

MBPdeFrancisco:~ francisco$ dscacheutil -q host -a name localhost
name: localhost
ipv6_address: fe80:1::1
MBPdeFrancisco:~ francisco$ LC_ALL=C cat -vet /etc/hosts
##$
##$
# Host Database$
#$
# localhost is used to configure the loopback interface$
# when the system is booting. Do not change this entry.$
##$
127.0.0.1 localhostM-bM-^@M-($
255.255.255.255 broadcasthostM-bM-^@M-($
::1 localhostM-bM-^@M-($
fe80::1%lo0 localhost

MBPdeFrancisco:~ francisco$ cat /etc/resolv.conf
#
# macOS Notice
#
# This file is not consulted for DNS hostname resolution, address
# resolution, or the DNS query routing mechanism used by most
# processes on this system.
#
# To view the DNS configuration used by this system, use:
#   scutil --dns
#
# SEE ALSO
#   dns-sd(1), scutil(8)
#
# This file is automatically generated.
#
domain lan
nameserver 2001:8a0:ddce:7401:9e97:26ff:fedb:6214
nameserver 192.168.1.254