Hi,
When I add an element in a set (same with maps) and the set already
contains the element, the command fails with an error. Worse: I try to
add multiple elements and at least one of these elements is already in
the set, the command fails without adding any element. Why do you use
this semantic? It would be more ergonomic if you could just add elements
in a set without checking its content.
Have a good day,
Mikaël
Example:
```
# nft add set inet filter myset '{ type ipv4_addr; }'
# nft add element inet filter myset '{ 0.0.0.0 }'
# nft add element inet filter myset '{ 0.0.0.0 }'
<cmdline>:1:1-41: Error: Could not process rule: File exists
add element inet filter myset { 0.0.0.0 }
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
# nft add element inet filter myset '{ 0.0.0.0, 1.1.1.1 }'
<cmdline>:1:1-50: Error: Could not process rule: File exists
add element inet filter myset { 0.0.0.0, 1.1.1.1 }
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
# nft list set inet filter myset
set myset {
type ipv4_addr
elements = { 0.0.0.0}
}
```
Expected: no error and the set contains { 0.0.0.0, 1.1.1.1}.
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