Guys…
I tried a lot of things. I even was tried forget this. But is very bad enable and disable network all day.
I catch more informations: (always after this, I need reconnect NetworkManager)
2015-09-08T18:13:04.110936-03:00 linux-1c03 dhclient[27291]: DHCPOFFER from 192.168.254.12015-09-08T18:13:06.016231-03:00 linux-1c03 avahi-daemon[847]: Joining mDNS multicast group on interface wlp2s0.IPv6 with address fe80::260a:64ff:fe11:3723.
2015-09-08T18:13:06.016542-03:00 linux-1c03 avahi-daemon[847]: New relevant interface wlp2s0.IPv6 for mDNS.
2015-09-08T18:13:06.016731-03:00 linux-1c03 avahi-daemon[847]: Registering new address record for fe80::260a:64ff:fe11:3723 on wlp2s0.*.
2015-09-08T18:13:09.115954-03:00 linux-1c03 dhclient[27291]: DHCPREQUEST on wlp2s0 to 255.255.255.255 port 67 (xid=0x5a0ed7c2)
2015-09-08T18:13:09.140762-03:00 linux-1c03 dhclient[27291]: DHCPACK from 192.168.254.1 (xid=0x5a0ed7c2)
2015-09-08T18:13:09.142577-03:00 linux-1c03 dhclient[27291]: bound to 192.168.254.101 -- renewal in 3003 seconds.
2015-09-08T18:13:09.145500-03:00 linux-1c03 avahi-daemon[847]: Joining mDNS multicast group on interface wlp2s0.IPv4 with address 192.168.254.101.
2015-09-08T18:13:09.145716-03:00 linux-1c03 avahi-daemon[847]: New relevant interface wlp2s0.IPv4 for mDNS.
2015-09-08T18:13:09.145896-03:00 linux-1c03 avahi-daemon[847]: Registering new address record for 192.168.254.101 on wlp2s0.IPv4.
2015-09-08T18:13:09.333923-03:00 linux-1c03 dns-resolver: ATTENTION: You have modified /etc/resolv.conf. Leaving it untouched...
2015-09-08T18:13:09.336210-03:00 linux-1c03 dns-resolver: You can find my version in /etc/resolv.conf.netconfig
2015-09-08T18:13:23.633285-03:00 linux-1c03 dhclient[2473]: DHCPREQUEST on vboxnet0 to 192.168.56.100 port 67 (xid=0x560918e2)
2015-09-08T18:13:23.633763-03:00 linux-1c03 dhclient[2473]: DHCPACK from 192.168.56.100 (xid=0x560918e2)
2015-09-08T18:13:23.635739-03:00 linux-1c03 dhclient[2473]: bound to 192.168.56.101 -- renewal in 488 seconds.