On Mon, 22 May 2023, Timothy M Butterworth wrote:
On Mon, May 22, 2023 at 3:41?AM Tim Woodall <debianuser@woodall.me.uk> wrote:On Sun, 21 May 2023, Timothy M Butterworth wrote:The only address that should have a netmask of 255.255.255.255 is the Loopback interface.I don't much use ipv4 any more if I can avoid it but isn't it normal for point-to-point links to have a netmask of 255.255.255.255?Point-to-point links should have a mask of 255.255.255.252. This provides a Network, Broadcast and two host addresses.
Why? I'm not saying you cannot do this but I don't see what possible advantage it offers. The two cases I see are that you want the individual clients connecting via p-t-p links to be able to talk in which case you probably want something bigger than a /30 or you don't in which case a /32 is all you need.