On 23 Feb 2006, at 15:59, Stephen Shirley wrote:
> Depends how you look at it. According to ifconfig/ifup/ifdown, yes,
> it's
> a seperate interface. But to all practical intents and purposes, and
> according to iproute, it's not. ifconfig is deprecated, iproute is
> preferred.
>> 2: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 1000
> link/ether 00:c0:4f:bb:25:da brd ff:ff:ff:ff:ff:ff
> inet 193.1.99.120/26 brd 193.1.99.127 scope global eth0
> inet 136.201.105.1/24 brd 136.201.105.255 scope global eth0:1
Note the eth0:1 there - a different virtual interface. If you had done
ip addr add 136.201.105.1/24 eth0
then the output above would have finished
inet 193.1.99.120/26 brd 193.1.99.127 scope global eth0
inet 136.201.105.1/24 brd 136.201.105.255 scope global secondary eth0
which is subtly different and as Colm pointed out earlier, CAN be
problematic in certain cases.
Niall
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