Am 29.08.2013 15:38, schrieb John Chludzinski:
> I need to used multiple loopback addresses (interfaces) for an server
> application that communicates with multiple clients running on the same
> machine. Since a loopback interface short circuits the network stack
> (looping back in the IP layer) it is a more efficient means of
> communication, hence better for my purpose.
>
> How do I define multiple loopback interfaces?
>
> BTW, I'm a newbie to this mailing mailing list. Hopefully this is an
> appropriate question?
if you are running network.service it's trivial
NetworkManager -> no ida, i do not touch it
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[root@rh:/etc/sysconfig/network-scripts]$ cat /etc/sysconfig/network-scripts/ifcfg-lo:1
DEVICE=lo:1
IPADDR=127.0.0.2
ONPARENT=yes
[root@rh:/etc/sysconfig/network-scripts]$ ifup lo:1
[root@rh:/etc/sysconfig/network-scripts]$ ifconfig lo:1
lo:1: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.2 netmask 255.0.0.0
loop txqueuelen 0 (Lokale Schleife)
[root@rh:/etc/sysconfig/network-scripts]$ ping 127.0.0.2
PING 127.0.0.2 (127.0.0.2) 56(84) bytes of data.
64 bytes from 127.0.0.2: icmp_seq=1 ttl=50 time=0.056 ms
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that's the "lo" config shipped with Fedora
[root@rh:/etc/sysconfig/network-scripts]$ cat /etc/sysconfig/network-scripts/ifcfg-lo
DEVICE=lo
IPADDR=127.0.0.1
NETMASK=255.0.0.0
NETWORK=127.0.0.0
# If you're having problems with gated making 127.0.0.0/8 a martian,
# you can change this to something else (255.255.255.255, for example)
BROADCAST=127.255.255.255
ONBOOT=yes
NAME=loopback
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