The settings in the dnsmasq configuration file located in the conf/dnsmasq-qemu.conf must be equal to the arguments passed to the scripts.
Usage:
network-up.sh [ -b | --bridge-if BRIDGE_INTERFACE ] [ -t | --tap-if TAP_INTERFACE ]
[ -c | --create-bridge ] [ --vm-address VM_IP_ADDRESS ]
[ -a | --network-address NETWORK_ADDRESS ] [ -p | --prefix PREFIX ]
[ -n | --nat NAT_IF ] [ --dnsmasq-conf DNSMASQ_CONFIGURATION ]
[ --disable-dnsmasq ]
[ --dhcp-port DHCP_PORT ] [ --dns-port DNS_PORT ]
Usage:
network-down.sh [ -b | --bridge-if BRIDGE_INTERFACE ] [ -t | --tap-if TAP_INTERFACE ]
[ -a | --network-address NETWORK_ADDRESS ] [ --vm-address VM_IP_ADDRESS ]
[ -p | --prefix PREFIX ] [ --dnsmasq-conf DNSMASQ_CONFIGURATION ]
[ -f | --disable-ip-forwarding ] [ -i | --restart-iptables ]
[ -m | --remove-modules ] [ -k | --kill-dnsmasq ]
This script should be modified according to the parameters of the VM to be started.