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--- linux_network [2017/01/05 06:38] – created felixonmars
+++ linux_network [2018/11/07 16:34] (current) – felixonmars
@@ Line 1: / Line 1: @@
+==== IPv6 Tunnelbroker with systemd-networkd ====
+<code>
+# cat > /etc/systemd/network/he-tunnel.netdev << EOF
+[Match]
+[NetDev]
+Name=he-ipv6
+Kind=sit
+MTUBytes=1480
+[Tunnel]
+Local=<your_ip_address>
+Remote=<tunnelbroker_endpoint>
+TTL=255
+EOF
+# cat > /etc/systemd/network/he-tunnel.network << EOF
+[Match]
+Name=he-ipv6
+[Network]
+Address=2001:470:<yourprefix>::2/64
+Gateway=2001:470:<yourprefix>::1
+EOF
+# sed -i '/\[Network\]/aTunnel=he-ipv6' /etc/systemd/network/default.network
+</code>
+Add another Address= line for your routed /64.
+==== Use BBR ====
+<code>
+echo -e "\nnet.core.default_qdisc=fq\nnet.ipv4.tcp_congestion_control=bbr" >> /etc/sysctl.conf
+sysctl -p
+</code>
+To install latest kernel on Xenial: [[linux#install_zesty_kernel_49_on_xenial]]
+==== More Tolerant ICMP Ratelimit ====
+<code>
+echo -e "\nnet.ipv4.icmp_ratelimit=50" >> /etc/sysctl.conf
+sysctl -p
+</code>
 ==== /dev/net/tun Not Found? ====
 <code>