make boot，dnsmasq问题

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root@ubuntu:/home/l/newdts/linux-master/tools/labs# make boot
qemu/create_net.sh tap0

dnsmasq: failed to create listening socket for 172.213.0.1: Address already in use
qemu/create_net.sh tap1

dnsmasq: failed to create listening socket for 127.0.0.1: Address already in use
/home/l/newdts/linux-master/tools/labs/templates/assignments/6-e100/nttcp -v -i &
ARCH=x86 qemu/qemu.sh -kernel /home/l/newdts/linux-master/arch/x86/boot/bzImage -device virtio-serial -chardev pty,id=virtiocon0 -device virtconsole,chardev=virtiocon0 -serial pipe:pipe1 -serial pipe:pipe2 -netdev tap,id=tap0,ifname=tap0,script=no,downscript=no -net nic,netdev=tap0,model=virtio -netdev tap,id=tap1,ifname=tap1,script=no,downscript=no -net nic,netdev=tap1,model=i82559er -drive file=core-image-minimal-qemux86.ext4,if=virtio,format=raw -drive file=disk1.img,if=virtio,format=raw -drive file=disk2.img,if=virtio,format=raw --append "root=/dev/vda loglevel=15 console=hvc0" --display none -s -m 256
nttcp-l: nttcp, version 1.47
nttcp-l: running in inetd mode on port 5037 - ignoring options beside -v and -p
bind: Address already in use
nttcp-l: service-socket: bind:: Address already in use, errno=98
char device redirected to /dev/pts/18 (label virtiocon0)