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Check exit codes
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@ -25,8 +25,10 @@ configureDHCP() {
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NETWORK=$(ip -o route | grep "${VM_NET_DEV}" | grep -v default | awk '{print $1}')
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IP=$(ip address show dev "${VM_NET_DEV}" | grep inet | awk '/inet / { print $2 }' | cut -f1 -d/)
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if ! ip link add link "${VM_NET_DEV}" "${VM_NET_VLAN}" type macvlan mode bridge > /dev/null 2>&1 ; then
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echo -n "ERROR: Capability NET_ADMIN has not been set (1/$?). Please add the "
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{ ip link add link "${VM_NET_DEV}" "${VM_NET_VLAN}" type macvlan mode bridge > /dev/null 2>&1 ; rc=$?; } || :
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if (( rc != 0 )); then
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echo -n "ERROR: Capability NET_ADMIN has not been set ($?/1). Please add the "
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echo "following docker setting to your container: --cap-add NET_ADMIN" && exit 15
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fi
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@ -41,8 +43,10 @@ configureDHCP() {
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echo "INFO: Acquiring an IP address via DHCP using MAC address ${VM_NET_MAC}..."
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if ! ip link add link "${VM_NET_DEV}" name "${VM_NET_TAP}" address "${VM_NET_MAC}" type macvtap mode bridge > /dev/null 2>&1 ; then
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echo -n "ERROR: Capability NET_ADMIN has not been set (2/$?). Please add the "
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{ ip link add link "${VM_NET_DEV}" name "${VM_NET_TAP}" address "${VM_NET_MAC}" type macvtap mode bridge > /dev/null 2>&1 ; rc=$?; } || :
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if (( rc != 0 )); then
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echo -n "ERROR: Capability NET_ADMIN has not been set ($?/2). Please add the "
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echo "following docker setting to your container: --cap-add NET_ADMIN" && exit 16
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fi
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@ -74,12 +78,13 @@ configureDHCP() {
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[[ ! -e "${TAP_PATH}" ]] && [[ -e "/dev0/${TAP_PATH##*/}" ]] && ln -s "/dev0/${TAP_PATH##*/}" "${TAP_PATH}"
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if [[ ! -e "${TAP_PATH}" ]]; then
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if ! mknod "${TAP_PATH}" c "$MAJOR" "$MINOR" ; then
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echo "ERROR: Cannot mknod: ${TAP_PATH} ($?)" && exit 20
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fi
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{ mknod "${TAP_PATH}" c "$MAJOR" "$MINOR" ; rc=$?; } || :
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(( rc != 0 )) && echo "ERROR: Cannot mknod: ${TAP_PATH} ($?)" && exit 20
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fi
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if ! exec 30>>"$TAP_PATH"; then
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{ exec 30>>"$TAP_PATH"; rc=$?; } || :
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if (( rc != 0 )); then
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echo -n "ERROR: Cannot create TAP interface ($?). Please add the following docker settings to your "
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echo "container: --device-cgroup-rule='c ${MAJOR}:* rwm' --device=/dev/vhost-net" && exit 21
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fi
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@ -90,7 +95,9 @@ configureDHCP() {
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chmod 660 /dev/vhost-net
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fi
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if ! exec 40>>/dev/vhost-net; then
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{ exec 40>>/dev/vhost-net; rc=$?; } || :
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if (( rc != 0 )); then
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echo -n "ERROR: VHOST can not be found ($?). Please add the following "
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echo "docker setting to your container: --device=/dev/vhost-net" && exit 22
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fi
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@ -107,8 +114,10 @@ configureNAT () {
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#Create bridge with static IP for the VM guest
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if ! ip link add dev dockerbridge type bridge > /dev/null 2>&1 ; then
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echo -n "ERROR: Capability NET_ADMIN has not been set (3/$?). Please add the "
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{ ip link add dev dockerbridge type bridge > /dev/null 2>&1 ; rc=$?; } || :
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if (( rc != 0 )); then
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echo -n "ERROR: Capability NET_ADMIN has not been set ($?/3). Please add the "
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echo "following docker setting to your container: --cap-add NET_ADMIN" && exit 23
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fi
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@ -132,7 +141,8 @@ configureNAT () {
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#Check port forwarding flag
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if [[ $(< /proc/sys/net/ipv4/ip_forward) -eq 0 ]]; then
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if ! sysctl -w net.ipv4.ip_forward=1 > /dev/null 2>&1; then
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{ sysctl -w net.ipv4.ip_forward=1 > /dev/null 2>&1; rc=$?; } || :
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if (( rc != 0 )); then
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echo -n "ERROR: IP forwarding is disabled ($?). Please add the following "
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echo "docker setting to your container: --sysctl net.ipv4.ip_forward=1" && exit 24
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fi
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