Deprecation notice for BIND 9.18: Differentiated Services Code Point (DSCP) support

[Robert M. Stockmann]

On Thu, 5 Jan 2023, [utf-8] Ondřej Surý wrote:

> Date: Thu, 5 Jan 2023 09:02:30 +0100
> From: "[utf-8] Ondřej Surý" <ondrej at isc.org>
> To: BIND users <bind-users at lists.isc.org>
> Subject: Deprecation notice for BIND 9.18: Differentiated Services Code
>     Point (DSCP) support
> 
> Hi,
> 
> in line with our deprecation policy, I am notifying the mailing list 
> about our intent to deprecated the Differentiated Services Code Point 
> (DSCP) support in BIND 9.  
> The DSCP support in BIND 9 has been already non-operational since 
> BIND 9.16 as the support for setting the DSCP socket option was not 
> implemented in the new networking code for the listening sockets, and 
> since BIND 9.18 when the outgoing DNS code started using the new 
> networking code. So far, nobody has noticed.  
> There's an alternative plan that would include re-implementing the 
> functionality, but there would have to be strong user case behind the 
> work. But again, judging from the fact that nobody has noticed, there 
> doesn't seem to be strong user base behind DSCP.
> 
> The deprecation will include:
> 
> * specifying the **dscp** option in following statements:
>   - `also-notify`
>   - `catalog-zones`
>   - `dual-stack-servers`
>   - `forwarders`
>   - `listen-on`
>   - `listen-on-v6`
>   - `notify-source`
>   - `notify-source-v6`
>   - `parental-source`
>   - `parental-source-v6`
>   - `query-source`
>   - `query-source-v6`
>   - `transfer-source`
>   - `transfer-source-v6`
>   - `parental-agents`
>   - `primaries`
>   - `
> * following statements as whole:
>   - `dscp`
> 
> We plan to mark the options as deprecated in BIND 9.16 and 9.18 and remove it
> in BIND 9.20 because it's already non-operational.
> 

This is like Mercedes Benz announcing they will only sell
the Baby Benz model, which is a Volkswagen EV barebonez with
the VW logo replaced with a plastic Mercedes Benz star.

-- 
Robert M. Stockmann - RHCE
Network Engineer - UNIX/Linux Specialist
crashrecovery.org  stock at stokkie.net