rendered paste body[gregp@localhost ~]$ ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:0C:29:E3:18:AA
inet addr:10.10.10.1 Bcast:10.10.10.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fee3:18aa/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1014 errors:0 dropped:0 overruns:0 frame:0
TX packets:115 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:86035 (84.0 KiB) TX bytes:9645 (9.4 KiB)
Interrupt:185 Base address:0x1400
[gregp@localhost ~]$ ifconfig lo
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:7327 errors:0 dropped:0 overruns:0 frame:0
TX packets:7327 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:4802046 (4.5 MiB) TX bytes:4802046 (4.5 MiB)
[gregp@localhost ~]$ ping -c 1 10.10.10.1
PING 10.10.10.1 (10.10.10.1) 56(84) bytes of data.
64 bytes from 10.10.10.1: icmp_seq=0 ttl=64 time=0.041 ms
--- 10.10.10.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.041/0.041/0.041/0.000 ms, pipe 2
[gregp@localhost ~]$ sudo ifconfig lo down
[gregp@localhost ~]$ ping -c 1 10.10.10.1
PING 10.10.10.1 (10.10.10.1) 56(84) bytes of data.
--- 10.10.10.1 ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms
[gregp@localhost ~]$