No se puede hacer ping a localhost después de migrar a un nuevo Mac

Después de migrar a un nuevo MacBook Pro ya no puedo hacer ping localhost .

Ya intenté cambiar mi /etc/hosts aunque ya estaba bien antes.

$ 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. funciona de alguna manera, no puedo entender por qué.

Si reinicio el sistema no se resuelve localhost de nuevo, pero si yo ping localhost. entonces ping localhost empieza a funcionar. No sé si esto puede ayudar a alguien con el mismo problema

¿Qué podría estar mal?

$ 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

más resultados

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