[HECnet] tap/tun setup by using nmcli

[Timothy Stark]

Folks,

 

I tried to email to SIMH mailing list but I got delivery failure message.

 

I have some network access problems when it messed configuration up
overnight because I can't access any with hostnames but only IP addresses. 

That cause conflict with network manager service. 

 

I successfully set up br0 as permanent setting by using nmcli commands.

 

$ nmcli con add type bridge ifname br0

$ nmcli con add type bridge-slave ifname ens33 master br0

$ nmcli con up br0

 

I tried to set up tap devices but I kept getting connection failure.  SIMH
simulator can't access tap devices - no operation permit errors.

 

$ nmcli con add type tun ifname tap0 con-name tap0 mode tap owner `id -u`

$ nmcli con add type bridge-slave ifname tap0 con-name tap0 master br0

$ nmcli con up tap0

 

Does anyone know any successful setup by using nmcli for creating tap
devices as permanent configuration?

 

I removed some br0 setup from tap-setup.sh and successfully set up tap
devices by using ip commands.

My modified tap-setup.sh script here:

 

# Using nmcli for creating br0 device first at once

#

# $ nmcli con add type bridge ifname br0

# $ nmcli con add type bridge-slave ifname ens33 master br0

# $ nmcli con up br0

 

# Create the TAP network devices

/sbin/ip tuntap add dev tap0 mode tap

/sbin/ip link set dev tap0 up

 

/sbin/ip tuntap add dev tap1 mode tap

/sbin/ip link set dev tap1 up

 

/sbin/ip tuntap add dev tap2 mode tap

/sbin/ip link set dev tap2 up

 

/sbin/ip tuntap add dev tap3 mode tap

/sbin/ip link set dev tap3 up

 

# bridge in the tap devices

/sbin/brctl addif br0 tap0

/sbin/ip addr flush dev tap0

 

/sbin/brctl addif br0 tap1

/sbin/ip addr flush dev tap1

 

/sbin/brctl addif br0 tap2

/sbin/ip addr flush dev tap2

 

/sbin/brctl addif br0 tap3

/sbin/ip addr flush dev tap3

 

/sbin/brctl show

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