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are settings for sysctl:

net.inet.tcp.keepidle: 60000
net.inet.tcp.keepintvl: 45000
net.inet.tcp.keepinit: 45000
net.inet.tcp.keepcnt: 8
net.inet.tcp.always_keepalive: 1
net.ipv4.tcp_keepalive_intvl: 75
net.ipv4.tcp_keepalive_probes: 9
net.ipv4.tcp_keepalive_time: 60 (You may consider lowering this value from the default 300 seconds)

But when I trying to set these paramters I got error:

sysctl: error: 'net.inet.tcp.keepidle' is an unknown key

For net.inet.tcp.keepidle,net.inet.tcp.keepintvl,net.inet.tcp.keepinit,net.inet.tcp.keepcnt and net.inet.tcp.always_keepalive parameters.

Is it safe to just remove them? What parameters should be used instead? (Any notes about why they were removed are welcome)

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