meu cenário é o seguinte…
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 brd 127.255.255.255 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
link/ether 18:03:73:eb:67:77 brd ff:ff:ff:ff:ff:ff
inet6 fe80::1a03:73ff:feeb:6777/64 scope link
valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
link/ether 00:10:18:d5:82:50 brd ff:ff:ff:ff:ff:ff
inet 1.1.1.1/24 brd 1.1.1.255 scope global eth1
inet6 fe80::210:18ff:fed5:8250/64 scope link
valid_lft forever preferred_lft forever
4: eth2: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN qlen 1000
link/ether 00:10:18:d5:82:52 brd ff:ff:ff:ff:ff:ff
1113: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN
link/ether 18:03:73:eb:67:77 brd ff:ff:ff:ff:ff:ff
inet 10.10.10.1/16 brd 10.10.255.255 scope global br0
14: tap0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 100
link/ether fe:3d:c8:53:66:ba brd ff:ff:ff:ff:ff:ff
inet6 fe80::fc3d:c8ff:fe53:66ba/64 scope link
valid_lft forever preferred_lft forever
16: ppp0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1492 qdisc pfifo_fast state UNKNOWN qlen 3
link/ppp
inet 177.103.xxx.xxx peer 200.100.xxx.xxx/32 scope global ppp0