Теперь vboxnet7 добавился.
# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 00:25:22:85:1f:22 brd ff:ff:ff:ff:ff:ff
inet 178.137.122.110/20 brd 178.137.127.255 scope global eth0
valid_lft forever preferred_lft forever
3: vboxnet0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN group default qlen 1000
link/ether 0a:00:27:00:00:00 brd ff:ff:ff:ff:ff:ff
4: vboxnet1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN group default qlen 1000
link/ether 0a:00:27:00:00:01 brd ff:ff:ff:ff:ff:ff
5: vboxnet2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN group default qlen 1000
link/ether 0a:00:27:00:00:02 brd ff:ff:ff:ff:ff:ff
6: vboxnet3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN group default qlen 1000
link/ether 0a:00:27:00:00:03 brd ff:ff:ff:ff:ff:ff
7: vboxnet4: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN group default qlen 1000
link/ether 0a:00:27:00:00:04 brd ff:ff:ff:ff:ff:ff
8: vboxnet5: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN group default qlen 1000
link/ether 0a:00:27:00:00:05 brd ff:ff:ff:ff:ff:ff
9: vboxnet6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN group default qlen 1000
link/ether 0a:00:27:00:00:06 brd ff:ff:ff:ff:ff:ff
10: vboxnet7: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN group default qlen 1000
link/ether 0a:00:27:00:00:07 brd ff:ff:ff:ff:ff:ff
#
Конфиг dnsmasq
# cat /etc/dnsmasq.conf | egrep -v '^#|^$'
interface=vboxnet7
dhcp-range=192.168.56.102,192.168.56.200,10m
dhcp-leasefile=/var/lib/misc/dnsmasq.leases
log-queries
log-facility=/var/log/dnsmasq.log
log-dhcp