Hi Phil,
On Wed, Oct 24, 2018 at 12:42:09PM +0200, Phil Sutter wrote:
> Trying to add a range of size 1 was previously not allowed:
>
> | # nft add element ip t s '{ 40-40 }'
> | Error: Range has zero or negative size
> | add element ip t s { 40-40 }
> | ^^^^^
>
> The error message is not correct: A range of N-K with K >= N consists of
> K - N + 1 elements (N, N + 1, N + 2, ... K - 1, K). Therefore a range of
> N-N consists of 1 (N - N + 1) elements, namely N.
>
> Allow this in a simple way by reducing the range into a single element:
>
> | # nft list set ip t s
> | table ip t {
> | set s {
> | type inet_service
> | }
> | }
> | # nft add element ip t s '{ 40-40 }'
> | # nft list set ip t s
> | table ip t {
> | set s {
> | type inet_service
> | elements = { 40 }
> | }
> | }
> | # nft get element ip t s '{ 40-40 }'
> | table ip t {
> | set s {
> | type inet_service
> | flags interval
> | elements = { 40 }
> | }
> | }
Hm, I would probably just do it if the 'merge' flag is set on.
Arguably, this can be something mistyped by the user. Or dealing with
a silly robot.
So not sure about this one.
