Robert Nichols wrote:
Dmitry Cherkasov wrote:
Hello everybody!
Could anybody advice on the following problem.
I need to assign several ip-addresses to 'lo' interface (beside
127.0.0.1). It is convenient to me to implement NAT with such
addresses.
The "lo" interface already accepts packets with any 127.x.y.z
address. Do you really need more addresses than the 127.0.0.0/8
block?
$ ping -c1 127.111.222.123
PING 127.111.222.123 (127.111.222.123) 56(84) bytes of data.
64 bytes from 127.111.222.123: icmp_seq=1 ttl=64 time=0.104 ms
I did absolutely nothing special to set that up. I also routinely
have an stunnel process listening on 127.0.0.25:465, and again, I
did nothing special with the interface configuration or routing
tables to allow that to work.
Any doubter can demonstrate that easily:
-----------
#!/bin/bash
#
z=1;y=0;x=0
while [ $x -le 255 ] ; do
y=0
while [ $y -le 255 ] ; do
z=1
while [ $z -le 255 ] ; do
ping -c1 127.$x.$y.$z
(( z +=1 ))
done
(( y +=1 ))
done
(( x +=1 ))
done
---------------------
<snip>
PING 127.5.139.115 (127.5.139.115) 56(84) bytes of data.
64 bytes from 127.5.139.115: icmp_seq=1 ttl=64 time=0.051 ms
--- 127.5.139.115 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.051/0.051/0.051/0.000 ms
PING 127.5.139.116 (127.5.139.116) 56(84) bytes of data.
64 bytes from 127.5.139.116: icmp_seq=1 ttl=64 time=0.052 ms
--- 127.5.139.116 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.052/0.052/0.052/0.000 ms
PING 127.5.139.117 (127.5.139.117) 56(84) bytes of data.
64 bytes from 127.5.139.117: icmp_seq=1 ttl=64 time=0.051 ms
--- 127.5.139.117 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.051/0.051/0.051/0.000 ms
PING 127.5.139.118 (127.5.139.118) 56(84) bytes of data.
64 bytes from 127.5.139.118: icmp_seq=1 ttl=64 time=0.051 ms
--- 127.5.139.118 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.051/0.051/0.051/0.000 ms
...etc.
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