Date: Sat, 4 May 2024 20:42:24 +0100 From: Jessica Clarke <jrtc27@freebsd.org> To: Lexi Winter <lexi@le-fay.org> Cc: arch@freebsd.org, net@freebsd.org Subject: Re: review request: changing the default ifconfig(8) address format to CIDR Message-ID: <2A85E653-1228-4635-83A4-BED72AEE9420@freebsd.org> In-Reply-To: <ZjZVaxzdMehqqci_@ilythia.eden.le-fay.org> References: <ZjZVaxzdMehqqci_@ilythia.eden.le-fay.org>
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On 4 May 2024, at 16:34, Lexi Winter <lexi@le-fay.org> wrote: > hi, > > i've just submitted this PR: > > https://github.com/freebsd/freebsd-src/pull/1216 > > which contains this commit: > > commit 57d273c90ee1c17446236aba25ed0bd291c4f126 (HEAD -> lf/main, hemlock/lf/main) > Author: Lexi Winter <lexi@le-Fay.ORG> > Date: Sat May 4 16:11:21 2024 +0100 > > ifconfig(8): change default IP address format to 'cidr' > > 'netmasks' haven't been used in IP networking for decades. Change the > default address format for both IPv4 and IPv6 addreses in ifconfig(8) to > 'cidr', which prints addreses in the format most users will be more > familiar with. > > The previous format is still available using -finet:hex or -finet6:numeric. > > imp@ suggested i should ask arch@ and net@ about this, so here i am! > > i understand there might be some backward-compat concerns with scripting > here, but it's well past time this change was made, and anyone who > really can't update their scripts can use ifconfig -f or > $IFCONFIG_FORMAT to retain the old behaviour. Do we need to care about supporting (/ do we currently support) historical non-contiguous netmasks? At a glance the CIDR code doesn’t handle that and will stop at the first 0, so changing to that by default would break such setups. Jess
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