39 lines
901 B
Bash
39 lines
901 B
Bash
#!/bin/bash
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set -x
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set -e
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get_default_iface() {
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ip -4 r show default | awk '{print $5}'
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}
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declare -A UPSTREAMS=(
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[mtsil]=102
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[mtsazov]=100
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[rtazov]=101
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)
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for name in "${!UPSTREAMS[@]}"; do
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mark=${UPSTREAMS[$name]}
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veth_addr=10.${mark}.1.1
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vpeer_addr=10.${mark}.1.2
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veth_if=veth${name}
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vpeer_if=vpeer${name}
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ip netns add $name
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ip link add $veth_if type veth peer name $vpeer_if
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ip link set $vpeer_if netns $name
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ip addr add $veth_addr/24 dev $veth_if
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ip link set $veth_if up
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ip netns exec $name ip addr add $vpeer_addr/24 dev $vpeer_if
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ip netns exec $name ip link set $vpeer_if up
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ip netns exec $name ip link set lo up
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ip netns exec $name ip route add default via $veth_addr
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iptables -t mangle -A PREROUTING -s $vpeer_addr/24 -j MARK --set-mark $mark
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iptables -t nat -A POSTROUTING -s $vpeer_addr/24 -o "$(get_default_iface)" -j MASQUERADE
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done
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sysctl net.ipv4.ip_forward=1
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