[Bug 267278] ipfw mask addr:mask syntax creates wrong rule

From: <bugzilla-noreply_at_freebsd.org>
Date: Sat, 03 Dec 2022 12:23:17 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=267278

--- Comment #2 from Marek Zarychta <zarychtam@plan-b.pwste.edu.pl> ---
Instead of creating a new PR, I will try to hijack this one a bit. I am
struggling with pipe configuration for the whole /48 subnet. Tried to use mask
src-ip6 for dynamic pipes, but failed:

${fwcmd} pipe 20 config bw  70Mbits/s burst 110Mbits buckets 512 mask src-ip6
0x000000000000ffffffffffffffffffff - wrong syntax
${fwcmd} pipe 20 config bw  70Mbits/s burst 110Mbits buckets 512 mask src-ip6
/48 - wrong syntax
${fwcmd} pipe 20 config bw  70Mbits/s burst 110Mbits buckets 512 mask src-ip6
ffffffffff::/48 - syntax correct, but pipes don't show up
${fwcmd} pipe 20 config bw  70Mbits/s burst 110Mbits buckets 512 mask src-ip6
::/48 - syntax correct, but pipes don't show up

It makes me wonder if dynamic pipes are really really supported for IPv6
traffic.

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