35 lines
869 B
Bash
35 lines
869 B
Bash
#!/bin/bash
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set -euo pipefail
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BRIDGE_NAME="${BRIDGE_NAME:-br-rego-vpn}"
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BRIDGE_CIDR="${BRIDGE_CIDR:-100.100.0.1/24}"
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VM_NET_IP="${VM_NET_IP:-100.100.0.2}"
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VM_MAC="${VM_MAC:-52:54:00:12:34:56}"
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LEASE_TIME="${LEASE_TIME:-12h}"
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DNS_SERVERS="${DNS_SERVERS:-1.1.1.1,8.8.8.8}"
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GATEWAY_IP="${BRIDGE_CIDR%%/*}"
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mkdir -p /etc/dnsmasq.d
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cat > /etc/dnsmasq.d/rego.conf <<EOF
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interface=${BRIDGE_NAME}
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bind-interfaces
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except-interface=lo
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dhcp-authoritative
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log-dhcp
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dhcp-range=${VM_NET_IP},${VM_NET_IP},${LEASE_TIME}
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dhcp-option=option:router,${GATEWAY_IP}
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dhcp-option=option:dns-server,${DNS_SERVERS}
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# Static lease for the VM
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# (VM must use DHCP for this to take effect)
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dhcp-host=${VM_MAC},${VM_NET_IP}
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EOF
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echo "[rego-tunnel] dnsmasq on ${BRIDGE_NAME} gateway=${GATEWAY_IP} lease ${VM_MAC} -> ${VM_NET_IP}"
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exec dnsmasq --no-daemon --conf-file=/etc/dnsmasq.d/rego.conf
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