Based on the analysis below it's not IMO it's not worth it. Also, the KB has been deleted by Microsoft. Here[1] is a link to an archived version of that article.
[1]:https://mskb.pkisolutions.com/kb/281579 On Wed, Sep 25, 2024, 02:31 Simon Kelley <si...@thekelleys.org.uk> wrote: > Downsides to this proposed change. > > 1) Old versions of Windows might break. > 2) Newer versions of windows might break - we've not done testing on > which do and don't. > 3) Other platforms which have made the same mistake might break. > 4) Dnsmasq installations which unkowningly rely on this behaviour in > other respects might break. > > Upsides to the proposed change. > 1) ~1% more available addresses in DHCP pools. > 2) A small amount of code which no longer needs maintenance. > > It's not clear to me what the balance is here. Opinions, list? > > Simon. > > > > > On 18/09/2024 18:22, Jan Ceuleers wrote: > > Dear dnsmasq community, > > > > The changelog for version 2.47 contains the following: > > > > Don't dynamically allocate DHCP addresses which may break > > Windows. Addresses which end in .255 or .0 are broken in > > Windows even when using supernetting. > > --dhcp-range=192.168.0.1,192.168.1.254,255,255,254.0 means > > 192.168.0.255 is a valid IP address, but not for Windows. > > See Microsoft KB281579. We therefore no longer allocate > > these addresses to avoid hard-to-diagnose problems. > > > > Unless I'm mistaken the listed Microsoft KB applies only to Windows > versions that are long since past end of support. Furthermore, CIDR was > introduced by the IETF more than 30 years ago. > > > > I was therefore wondering whether it is time to retire the special > treatment of addresses ending in .0 or .255 in Class C address ranges. > > > > Many thanks, Jan > > > > > > _______________________________________________ > > Dnsmasq-discuss mailing list > > Dnsmasq-discuss@lists.thekelleys.org.uk > > https://lists.thekelleys.org.uk/cgi-bin/mailman/listinfo/dnsmasq-discuss > > > _______________________________________________ > Dnsmasq-discuss mailing list > Dnsmasq-discuss@lists.thekelleys.org.uk > https://lists.thekelleys.org.uk/cgi-bin/mailman/listinfo/dnsmasq-discuss >
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