Re: [PATCH net-next 2/3] netlink: specs: update rt-rule src/dst attribute types to support IPv4 addresses

On Wed, Oct 29, 2025 at 04:37:42PM -0700, Jakub Kicinski wrote:

On Wed, 29 Oct 2025 08:22:44 +0000 Hangbin Liu wrote:

...

   -
     name: dst

•    type: u32
  

•    type: binary
  

•    display-hint: ipv4
   -
     name: src
  

•    type: u32
  

•    type: binary
  

•    display-hint: ipv4
  

This will be annoying For C / C++, and you didn't set the max len so I think we'll also have to malloc each time. Do we not support display-hint for scalars?

Hi Jakub,

I just realize that most of the address/src/dst in rt-addr/route are dual stack. The same with FRA_DST. We can't simply change binary to u32. So can we keep this u32 -> binary change?

Thanks Hangbin