View Source tunctl_linux (tunctl v0.3.4)
tunctl behaviour for Linux.
For IPv4 addresses, beam needs to have privileges to configure interfaces.
To add cap_net_admin capabilities:
sudo setcap cap_net_admin=ep /path/to/bin/beam.smp
To check the privileges:
getcap /path/to/bin/beam.smp
To remove the privileges:
sudo setcap -r cap_net_admin=ep /path/to/bin/beam.smp
Currently, IPv6 addresses are configured by calling ifconfig using sudo (see below).