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Date:      Sat, 6 May 2023 14:04:22 -0700
From:      Gary Aitken <freebsd@dreamchaser.org>
To:        FreeBSD Mailing List <freebsd-questions@freebsd.org>
Subject:   blackhole defaults
Message-ID:  <080af465-82c9-6347-473d-0235d6982278@dreamchaser.org>

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I don't think I've specifically set any of these:

$ sysctl net.inet | grep blackhole
net.inet.tcp.v6pmtud_blackhole_mss: 1220
net.inet.tcp.pmtud_blackhole_mss: 1200
net.inet.tcp.pmtud_blackhole_detection: 0
net.inet.tcp.blackhole: 2
net.inet.udp.blackhole: 1
net.inet.sctp.blackhole: 0

Can someone explain to me the logic behind the last 3 (tcp,udp,sctp)
defaults, and why they aren't all at 2?

Gary



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