Re: ip a a /32 or used netmask

[Jan Engelhardt <jengelh@xxxxxxxxxx>]

On Tuesday 2012-04-03 23:32, richard lucassen wrote:
>
>> >Just a question:
>> >I have a NIC eth0 with address 10.0.0.1/24
>> >I want to add an ip address to that NIC. Both ways work:
>> >ip a a 10.0.0.2/32 dev eth0
>> >ip a a 10.0.0.2/24 dev eth0
>> >Is there anyhow some or other difference between the two? And is one
>> >of the two ways preferred?
>> 
>> The difference lies in the route that is implicitly added.
>
>AFAIUI this is valid if it's another subnet, e.g.:
>
>ip a a 10.0.255.2/24 dev eth0

Anything is valid (save perhaps for 0.0.0.0/::) for addition.
Don't think up artificial limitations where there are none.

>But as long as the added ip is in the existing range of the NIC, then
>there is no difference between adding a 10.0.0.2/32 or a 10.0.0.2/24.
>
>Right or wrong? Or am I still missing something crucial?
>
>R.
>
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