32 lines
785 B
Bash
32 lines
785 B
Bash
#!/bin/bash
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# Exit on error
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set -e
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HOSTNAME="mDns"
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INTERFACE="eth0"
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VLANS="20 100"
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MTU=$(ip link show "$INTERFACE" | awk '{print $5}')
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for VLAN in $VLANS; do
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# INTERFACE PROVISION
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IFNAME="${INTERFACE}.${VLAN}"
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[ ! -d "/sys/class/net/${IFNAME}" ] && {
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echo "create interface ${IFNAME}"
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ip link add link "$INTERFACE" name "$IFNAME" mtu "$MTU" type vlan id "$VLAN"
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}
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echo "bring up ${IFNAME} interface"
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ip link set "${IFNAME}" up
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# DHCP
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[ -f "/var/run/udhcpc.${IFNAME}.pid" ] && {
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kill "$(cat "/var/run/udhcpc.$IFNAME.pid")" || true
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rm "/var/run/udhcpc.$IFNAME.pid"
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}
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echo "starting dhcp client on ${IFNAME}"
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udhcpc -b -i "$IFNAME" -x hostname:"$HOSTNAME" -p "/var/run/udhcpc.${IFNAME}.pid"
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done
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exec "$@"
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