$ journalctl -xe
Abr 26 17:10:38 ubuntultsp NetworkManager[1151]: <warn>  [1556309438.7938] device (eth2): Activation: failed for connection 'Conexão cab
Abr 26 17:10:38 ubuntultsp NetworkManager[1151]: <info>  [1556309438.7952] device (eth1): state change: failed -> disconnected (reason '
Abr 26 17:10:38 ubuntultsp avahi-daemon[1098]: Withdrawing address record for fe80::5f80:ea37:4b0b:f656 on eth1.
Abr 26 17:10:38 ubuntultsp NetworkManager[1151]: <info>  [1556309438.7964] device (eth3): state change: failed -> disconnected (reason '
Abr 26 17:10:38 ubuntultsp avahi-daemon[1098]: Leaving mDNS multicast group on interface eth1.IPv6 with address fe80::5f80:ea37:4b0b:f65
Abr 26 17:10:38 ubuntultsp avahi-daemon[1098]: Interface eth1.IPv6 no longer relevant for mDNS.
Abr 26 17:10:38 ubuntultsp avahi-daemon[1098]: Withdrawing address record for fe80::70b1:f57f:af3b:2784 on eth3.
Abr 26 17:10:38 ubuntultsp avahi-daemon[1098]: Leaving mDNS multicast group on interface eth3.IPv6 with address fe80::70b1:f57f:af3b:278
Abr 26 17:10:38 ubuntultsp avahi-daemon[1098]: Interface eth3.IPv6 no longer relevant for mDNS.
Abr 26 17:10:38 ubuntultsp NetworkManager[1151]: <info>  [1556309438.7973] device (eth2): state change: failed -> disconnected (reason '
Abr 26 17:10:38 ubuntultsp avahi-daemon[1098]: Withdrawing address record for fe80::bf13:4228:bd:f653 on eth2.
Abr 26 17:10:38 ubuntultsp avahi-daemon[1098]: Leaving mDNS multicast group on interface eth2.IPv6 with address fe80::bf13:4228:bd:f653.
Abr 26 17:10:38 ubuntultsp avahi-daemon[1098]: Interface eth2.IPv6 no longer relevant for mDNS.
Abr 26 17:11:44 ubuntultsp sudo[4563]: ubuntultsp : TTY=pts/8 ; PWD=/home/ubuntultsp ; USER=root ; COMMAND=/usr/sbin/service dnsmasq res
Abr 26 17:11:44 ubuntultsp sudo[4563]: pam_unix(sudo:session): session opened for user root by ubuntultsp(uid=0)
Abr 26 17:11:44 ubuntultsp systemd[1]: Stopped dnsmasq - A lightweight DHCP and caching DNS server.
-- Subject: A unidade dnsmasq.service concluiu o desligamento
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- A unidade dnsmasq.service concluiu o desligamento.
Abr 26 17:11:44 ubuntultsp systemd[1]: Starting dnsmasq - A lightweight DHCP and caching DNS server...
-- Subject: Unidade dnsmasq.service sendo iniciado
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- A unidade dnsmasq.service está sendo iniciada.
Abr 26 17:11:44 ubuntultsp dnsmasq[4569]: dnsmasq: verificação de sintaxe OK.
Abr 26 17:11:44 ubuntultsp dnsmasq[4572]: dnsmasq: failed to create listening socket for 192.168.57.64: Endereço já em uso
Abr 26 17:11:44 ubuntultsp dnsmasq[4572]: failed to create listening socket for 192.168.57.64: Endereço já em uso
Abr 26 17:11:44 ubuntultsp dnsmasq[4572]: FALHA ao iniciar
Abr 26 17:11:44 ubuntultsp systemd[1]: dnsmasq.service: Control process exited, code=exited status=2
Abr 26 17:11:44 ubuntultsp systemd[1]: Failed to start dnsmasq - A lightweight DHCP and caching DNS server.
-- Subject: A unidade dnsmasq.service falhou
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- A unidade dnsmasq.service falhou.
-- 
-- O resultado é failed.
Abr 26 17:11:44 ubuntultsp systemd[1]: Dependency failed for Host and Network Name Lookups.
-- Subject: A unidade nss-lookup.target falhou
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- A unidade nss-lookup.target falhou.
-- 
-- O resultado é dependency.
Abr 26 17:11:44 ubuntultsp systemd[1]: nss-lookup.target: Job nss-lookup.target/start failed with result 'dependency'.
Abr 26 17:11:44 ubuntultsp systemd[1]: dnsmasq.service: Unit entered failed state.
Abr 26 17:11:44 ubuntultsp systemd[1]: dnsmasq.service: Failed with result 'exit-code'.
Abr 26 17:11:44 ubuntultsp sudo[4563]: pam_unix(sudo:session): session closed for user root