ifconfig eth0 | grep -e 'inet ' -e 'inet6 .*2001:'
          inet addr:198.18.1.15  Bcast:0.0.0.0  Mask:255.255.255.0
          inet6 addr: 2001:db8:1::15/64 Scope:Global
set #
 ifconfig eth1 | grep -e 'inet ' -e 'inet6 .*2001:'
          inet addr:192.0.1.15  Bcast:0.0.0.0  Mask:255.255.255.0
          inet6 addr: 2001:db8:0:1::15/64 Scope:Global
set #
 ../../guestbin/ping-once.sh --up 192.0.1.254 # west_westnet4
up
set #
 ../../guestbin/ping-once.sh --up 192.1.2.45 # west_internet4
up
set #
 ../../guestbin/ping-once.sh --up 192.1.2.23 # east_internet4
up
set #
 ../../guestbin/ping-once.sh --up 192.1.2.254 # nic_internet4
up
set #
 ../../guestbin/ping-once.sh --up 192.1.3.33 # north_nicnet4
up
set #
 ../../guestbin/ping-once.sh --up 198.18.1.12 # rise_darknet4
up
set #
