On 3/18/23 16:31, cor...@free.fr wrote:
On 19/03/2023 06:17, Kushal Kumaran wrote:
On Sat, Mar 18 2023 at 07:28:23 PM, cor...@free.fr wrote:
Hello

I know 192.168.1.0/24 is a valid C range for network address.

but what does 192.168.1.1/24 mean?

I ask this just for a setting in the SPF:

spf.pinoad.se.        300    IN    TXT    "v=spf1 ip4:188.66.63.1/24 -all"


It means the same thing.  192.168.1.1/24 is the same range as
192.168.1.0/24, but written by someone not paying too much attention.


That's correct. Thanks.


AIUI:

* 192.168.1.0/24 identifies an IPv4 network with an address of 192.168.1.0 and a network prefix of 24 bits. The address is within the reserved private block 192.168.0.0/16. The prefix corresponds to a class C network.

* 192.168.1.1/24 identifies an IPv4 network interface with an address of 192.168.1.1 and a network prefix of 24. The interface is configured to communicate over the 192.168.1.0/24 network.


See:

https://en.wikipedia.org/wiki/IPv4_address

https://en.wikipedia.org/wiki/CIDR_notation


David


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