Re: ip a a /32 or used netmask

[richard lucassen <mailinglists@xxxxxxxxxxxx>]

On Tue, 3 Apr 2012 14:22:49 +0200 (CEST)
Jan Engelhardt <jengelh@xxxxxxxxxx> 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

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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