Now we have multiple valueless nodes
```
set vpp acl ip tag-name <txt> rule <u32> tcp-flags ack [valueless]
set vpp acl ip tag-name <txt> rule <u32> tcp-flags cwr [valueless]
set vpp acl ip tag-name <txt> rule <u32> tcp-flags ecn [valueless]
set vpp acl ip tag-name <txt> rule <u32> tcp-flags fin [valueless]
set vpp acl ip tag-name <txt> rule <u32> tcp-flags not ack [valueless]
set vpp acl ip tag-name <txt> rule <u32> tcp-flags not cwr [valueless]
set vpp acl ip tag-name <txt> rule <u32> tcp-flags not ecn [valueless]
set vpp acl ip tag-name <txt> rule <u32> tcp-flags not fin [valueless]
set vpp acl ip tag-name <txt> rule <u32> tcp-flags not psh [valueless]
set vpp acl ip tag-name <txt> rule <u32> tcp-flags not rst [valueless]
set vpp acl ip tag-name <txt> rule <u32> tcp-flags not syn [valueless]
set vpp acl ip tag-name <txt> rule <u32> tcp-flags not urg [valueless]
set vpp acl ip tag-name <txt> rule <u32> tcp-flags psh [valueless]
set vpp acl ip tag-name <txt> rule <u32> tcp-flags rst [valueless]
set vpp acl ip tag-name <txt> rule <u32> tcp-flags syn [valueless]
set vpp acl ip tag-name <txt> rule <u32> tcp-flags urg [valueless]
```
Replace all individual valueless flag nodes with a multi-value model:
```
set vpp acl ip tag-name <txt> rule <u32> tcp-flags set <flag_name> [multi]
set vpp acl ip tag-name <txt> rule <u32> tcp-flags not-set [flag_name]
```