.crts_sudoers

# This file, when placed in /etc/sudoers.d/, grants any user the sudo priveledges 
# to run the following commands. 
# These commands are necessary for connecting the CRTS_CR nodes in a network
# through the TUN interfaces. 

# Add the special tunCRTS TUN interface if it doesn't exist already
ALL             ALL = NOPASSWD: /sbin/ip tuntap add dev tunCRTS mode tun
# Bring up the tunCRTS TUN interface
ALL             ALL = NOPASSWD: /sbin/ip link set dev tunCRTS up
# Bring down the tunCRTS TUN interface
ALL             ALL = NOPASSWD: /sbin/ip link set dev tunCRTS down
# Set the tunCRTS interface with an arbitrary IP address
ALL             ALL = NOPASSWD: /sbin/ip addr add [0-9.]*/24 dev tunCRTS
# Set the tunCRTS interface with an arbitrary IP address
ALL             ALL = NOPASSWD: /sbin/ifconfig tunCRTS [0-9.]* netmask 255.255.255.0
# Set the route information for tunCRTS
ALL             ALL = NOPASSWD: /sbin/route add -net 10.0.0.0 netmask 255.255.255.0 dev tunCRTS
# Delete the route information for tunCRTS
ALL             ALL = NOPASSWD: /sbin/route del -net 10.0.0.0 netmask 255.255.255.0 dev tunCRTS
# Delete the special tunCRTS TUN interface
ALL             ALL = NOPASSWD: /sbin/ip tuntap del dev tunCRTS mode tun
# Set the tx queue length for tunCRTS
ALL             ALL = NOPASSWD: /sbin/ifconfig tunCRTS txqueuelen [0-9.]*