MATLAB doesn't work on Linux network namespace

Dear all,

I'm experiencing a license error when I run MATLAB in a network namespace of Linux. My OS is Ubuntu 18.04. My network environment configuration is:

#!/bin/bash

# create network namespaces
sudo ip netns add host0

# create TAP interfaces
sudo ip netns exec host0 ip tuntap add mode tap dev tap0

# bring up TAP interfaces
sudo ip netns exec host0 ip link set dev tap0 up

# bring up loopback interface in the namespace
# this is useful if you want to run ping in the namespace
sudo ip netns exec host0 ifconfig lo up

# assign IP addresses to interface
sudo ip netns exec host0 ip addr add 10.0.0.1/32 dev tap0

# add routing table
#sudo ip netns exec host0 route add default gw 10.0.0.1 dev tap0

# create virtual ethernet interface on physical host
sudo ip link add veth1 type veth peer name veth11

# associate virtual ethernet in the physical host to another virtual ethernet in the namespace
sudo ip link set veth11 netns host0

# now configure addresses in the virtual ethernet link
sudo ifconfig veth1 172.20.0.1/24 up
sudo ip netns exec host0 ifconfig veth11 172.20.0.2/24 up

# tell namespace to send all outgoing traffic to the physical host through the virtual ethernet link
sudo ip netns exec host0 route add default gw 172.20.0.1 veth11

# configure physical host to masquerade outgoing traffic generated by others
sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

# enable routing in the physical host
echo 1 | sudo tee /proc/sys/net/ipv4/ip_forward

Then when I run matlab through namespace:

sudo ip netns exec host0 matlab

I experience this error:

License checkout failed.
License Manager Error -9
This error may occur when: 
-The hostid of this computer does not match the hostid in the license file. 
-A Designated Computer installation is in use by another user. 
If no other user is currently running MATLAB, you may need to activate.

Troubleshoot this issue by visiting: 
https://www.mathworks.com/support/lme/R2018a/9

Diagnostic Information:
Feature: MATLAB 
License path: /home/luca/.matlab/R2018a_licenses:/usr/local/MATLAB/R2018a/licenses/license.dat:/usr/local/MATLAB/R
2018a/licenses/license.lic:/usr/local/MATLAB/R2018a/licenses/license_ECLab-Luca_960541_R2018a.lic 
Licensing error: -9,57.

I also tried to run the activate_matlab.sh through:

sudo ip netns exec host0 ./activate_matlab.sh

but this is the error:

I sincerely don't know how to solve the problem.

Somebody could help me?

Kind regards,

Luca