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sysctl.conf

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+
+# Accept IPv6 advertisements when forwarding is enabled
+net.ipv6.conf.all.accept_ra = 2
+
+kernel.sysrq=0
+vm.swappiness=0
+kernel.core_uses_pid=1
+kernel.randomize_va_space=1
+kernel.msgmnb=65536
+kernel.msgmax=65536
+kernel.shmmax=68719476736
+kernel.shmall=4294967296
+net.core.default_qdisc=fq
+net.ipv4.tcp_congestion_control=bbr
+net.ipv4.tcp_notsent_lowat = 16384
+net.ipv4.tcp_syncookies=1
+net.ipv4.conf.all.accept_source_route=0
+net.ipv4.conf.default.accept_source_route=0
+net.ipv4.conf.all.accept_redirects=0
+net.ipv4.conf.default.accept_redirects=0
+net.ipv4.conf.all.send_redirects=0
+net.ipv4.conf.default.send_redirects=0
+net.ipv4.conf.all.rp_filter=1
+net.ipv4.conf.default.rp_filter=1
+net.ipv4.conf.all.arp_ignore = 1
+net.ipv4.conf.default.arp_ignore = 1
+net.ipv4.icmp_echo_ignore_all=1
+net.ipv4.icmp_echo_ignore_broadcasts=1
+net.ipv4.icmp_ignore_bogus_error_responses=1
+net.ipv4.conf.all.secure_redirects=0
+net.ipv4.conf.default.secure_redirects=0
+
+#options for ss
+
+fs.file-max = 131072
+net.core.rmem_max = 67108864
+net.core.wmem_max = 67108864
+net.core.rmem_default = 67108864
+net.core.wmem_default = 67108864
+net.core.optmem_max = 67108864
+net.core.netdev_max_backlog = 131072
+net.core.somaxconn = 131072
+net.ipv4.ip_local_port_range = 1024 65535
+net.ipv4.tcp_mem = 25600 51200 102400
+net.ipv4.tcp_rmem = 4096 87380 67108864
+net.ipv4.tcp_wmem = 4096 65536 67108864
+net.ipv4.tcp_fastopen=3
+net.ipv4.tcp_low_latency = 1
+net.ipv4.tcp_no_metrics_save = 1
+net.ipv4.tcp_adv_win_scale = 1
+net.ipv4.tcp_tw_reuse = 1
+net.ipv4.tcp_timestamps = 0
+net.ipv4.tcp_fin_timeout = 30
+net.ipv4.tcp_window_scaling = 1
+net.ipv4.tcp_keepalive_time = 150
+net.ipv4.tcp_keepalive_probes = 5
+net.ipv4.tcp_keepalive_intvl = 30
+net.ipv4.tcp_synack_retries = 1
+net.ipv4.tcp_slow_start_after_idle=0
+net.ipv4.tcp_max_syn_backlog = 65536
+net.ipv4.tcp_max_tw_buckets = 720000
+net.ipv4.tcp_mtu_probing = 1