osmo-nitb configurable

Hi Harald,

Holger has just refreshed my memory on a conversation we've had on running multiple NITB instances on the same box: Linux Network Namespaces vs. making NITB configurable.

Kindly remind me of the immediate plans, should we make osmo-nitb configurable to bind on only specific IP addresses, like, now?

IIUC that would be a VTY item for osmo-nitb and a parameter into libosmo-abis. Concerning the VTY, the port could be configurable, or the IP address, thinking of 127.0.0.42.

I guess relying on `ip netns` would be quicker for now, and I'd have slightly more time for IuCS.

Is there anyone else out there that would love to configure osmo-nitb to bind on specific IP addresses only?

Thanks, ~Neels