Re: [PATCH v11] conf: Support CIDR notation for -a/--address option

[Jon Maloy <jmaloy@redhat.com>]

On 2026-02-24 06:56, Stefano Brivio wrote:
> On Mon, 16 Feb 2026 15:57:41 -0500
> Jon Maloy <jmaloy@redhat.com> wrote:
> 
>> We extend the -a/--address option to accept addresses in CIDR notation
>> (e.g., 192.168.1.1/24 or 2001:db8::1/64) as an alternative to using
>> separate -a and -n options.
>>
>> We add a new inany_prefix_pton() helper function that:
>> - Parses address strings with a compulsory /prefix_len suffix
>> - Validates prefix length based on address family (0-32 for IPv4,
>>    0-128 for IPv6), including handling of IPv4-to-IPv6 mapping case.
>>
>> For IPv4, the prefix length is stored in ip4.prefix_len when provided.
>> For IPv6, the given prefix length is still overridden by the default
>> value 64
>>
>> Mixing -n and CIDR notation results in an error to catch likely user
>> mistakes.
>>
>> Also fix a bug in conf_ip4_prefix() that was incorrectly using the
>> global 'optarg' instead of its 'arg' parameter.
> 
> Applied, apologies for the delay.
> 
> At the same time, this still had the conflict with commit 0c611bcd3120
> ("ip: Add ipproto_name() function"), which I already reported on v9,
> two weeks ago, asking to rebase. It's small things but it all adds up.
> 
Yeah, I rebased for the large series, which of course comprised rebase 
of this one too, but I forgot to re-post it.MR#466, qemu-kvm-9.8

///j