[CentOS] Re: alias ip-addresses at loopback

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.