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VM_NET_TAP

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VM_NET_TAP
This commit is contained in:
Kroese 2023-04-21 14:08:57 +02:00 committed by GitHub
commit 5127c6c213
1 changed files with 7 additions and 6 deletions
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13
run/network.sh
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@ -3,6 +3,7 @@ set -eu
# Docker environment variabeles
: ${VM_NET_TAP:='dsm'}
: ${VM_NET_HOST:='VirtualDSM'}
: ${VM_NET_MAC:='02:11:32:AA:BB:CC'}
@ -29,7 +30,6 @@ configureDHCP() {
echo "docker variable to your container: --device=/dev/vhost-net" && exit 85
fi
VM_NET_TAP="dsm"
echo "Info: Retrieving IP via DHCP using MAC ${VM_NET_MAC}..."
ip l add link eth0 name "${VM_NET_TAP}" address "${VM_NET_MAC}" type macvtap mode bridge || true
@ -51,7 +51,8 @@ configureDHCP() {
ip a flush "${VM_NET_TAP}"
TAP_PATH="/dev/tap$(</sys/class/net/${VM_NET_TAP}/ifindex)"
TAP_NR=$(</sys/class/net/"${VM_NET_TAP}"/ifindex)
TAP_PATH="/dev/tap${TAP_NR}"
# Create dev file (there is no udev in container: need to be done manually)
IFS=: read -r MAJOR MINOR < <(cat /sys/devices/virtual/net/"${VM_NET_TAP}"/tap*/dev)
@ -84,7 +85,6 @@ configureDHCP() {
configureNAT () {
VM_NET_IP='20.20.20.21'
VM_NET_TAP="_VmNatTap"
# Store IP for Docker healthcheck
echo "${VM_NET_IP}" > "/var/dsm.ip"
@ -94,9 +94,9 @@ configureNAT () {
ip addr add ${VM_NET_IP%.*}.1/24 broadcast ${VM_NET_IP%.*}.255 dev dockerbridge
ip link set dockerbridge up
#QEMU Works with taps, set tap to the bridge created
ip tuntap add dev ${VM_NET_TAP} mode tap
ip link set ${VM_NET_TAP} up promisc on
brctl addif dockerbridge ${VM_NET_TAP}
ip tuntap add dev "${VM_NET_TAP}" mode tap
ip link set "${VM_NET_TAP}" up promisc on
brctl addif dockerbridge "${VM_NET_TAP}"
#Add internet connection to the VM
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
@ -168,6 +168,7 @@ if [ "$DEBUG" = "Y" ]; then
echo "Info: Container IP is ${IP} with gateway ${GATEWAY}"
ifconfig
ip route
fi
if [ "$DHCP" != "Y" ]; then