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DHCP

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Kroese 2023-04-20 00:16:13 +02:00 committed by GitHub
parent 298ec4c90b
commit 66df790cb4
1 changed files with 10 additions and 9 deletions
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19
run/network.sh
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@ -15,7 +15,7 @@ set -eu
# Functions # Functions
# ###################################### # ######################################
configureMacVlan () { configureDHCP() {
VM_NET_TAP="_VmMacvtap" VM_NET_TAP="_VmMacvtap"
echo "Info: Retrieving IP via DHCP using MAC ${VM_NET_MAC}..." echo "Info: Retrieving IP via DHCP using MAC ${VM_NET_MAC}..."
@ -49,10 +49,10 @@ configureMacVlan () {
mknod ${_tmpTapPath} c $MAJOR $MINOR && : || ("ERROR: Cannot mknod: ${_tmpTapPath}" && exit 20) mknod ${_tmpTapPath} c $MAJOR $MINOR && : || ("ERROR: Cannot mknod: ${_tmpTapPath}" && exit 20)
fi fi
NET_OPTS="-netdev tap,id=hostnet0,vhost=on,vhostfd=40,fd=30 ${NET_OPTS} 30<>${_tmpTapPath} 40<>/dev/vhost-net" NET_OPTS="-netdev tap,id=hostnet0,vhost=on,vhostfd=40,fd=30 30<>${_tmpTapPath} 40<>/dev/vhost-net"
} }
configureNatNetwork () { configureNAT () {
VM_NET_IP='20.20.20.21' VM_NET_IP='20.20.20.21'
VM_NET_TAP="_VmNatTap" VM_NET_TAP="_VmNatTap"
@ -81,7 +81,7 @@ configureNatNetwork () {
echo "0 $VM_NET_MAC $VM_NET_IP $VM_NET_HOST 01:${VM_NET_MAC}" > /var/lib/misc/dnsmasq.leases echo "0 $VM_NET_MAC $VM_NET_IP $VM_NET_HOST 01:${VM_NET_MAC}" > /var/lib/misc/dnsmasq.leases
chmod 644 /var/lib/misc/dnsmasq.leases chmod 644 /var/lib/misc/dnsmasq.leases
NET_OPTS="-netdev tap,ifname=${VM_NET_TAP},script=no,downscript=no,id=hostnet0 ${NET_OPTS}" NET_OPTS="-netdev tap,ifname=${VM_NET_TAP},script=no,downscript=no,id=hostnet0"
# Build DNS options from container /etc/resolv.conf # Build DNS options from container /etc/resolv.conf
nameservers=($(grep '^nameserver' /etc/resolv.conf | sed 's/nameserver //')) nameservers=($(grep '^nameserver' /etc/resolv.conf | sed 's/nameserver //'))
@ -136,15 +136,16 @@ update-alternatives --set iptables /usr/sbin/iptables-legacy > /dev/null
update-alternatives --set ip6tables /usr/sbin/ip6tables-legacy > /dev/null update-alternatives --set ip6tables /usr/sbin/ip6tables-legacy > /dev/null
GATEWAY=$(ip r | grep default | awk '{print $3}') GATEWAY=$(ip r | grep default | awk '{print $3}')
NET_OPTS="-device virtio-net-pci,romfile=,netdev=hostnet0,mac=${VM_NET_MAC},id=net0"
if [[ "$GATEWAY" == "172."* ]]; then if [[ "$GATEWAY" == "172."* ]]; then
# Configuration for bridge network # Configuration for static IP
configureNatNetwork configureNAT
else else
# Configuration for macvlan network # Configuration for DHCP IP
configureMacVlan configureDHCP
fi fi
NET_OPTS="${NET_OPTS} -device virtio-net-pci,romfile=,netdev=hostnet0,mac=${VM_NET_MAC},id=net0"
# Hack for guest VMs complaining about "bad udp checksums in 5 packets" # Hack for guest VMs complaining about "bad udp checksums in 5 packets"
iptables -A POSTROUTING -t mangle -p udp --dport bootpc -j CHECKSUM --checksum-fill iptables -A POSTROUTING -t mangle -p udp --dport bootpc -j CHECKSUM --checksum-fill