NetworkRoaming
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Launchpad entry: https://features.launchpad.net/distros/ubuntu/+spec/network-roaming
Packages affected:
Summary
Rationale
Use cases
Scope
Design
Implementation
Code
Data preservation and migration
Unresolved issues
BoF agenda and discussion
The wpasupplicant package brings basic roaming support, and is already in edgy. The wpa-roam support is limited to one interface, due to contraints of the ifupdown package.
Why using wpasupplicant as base for roaming? - It does already background scanning and selects the 'best' (as configured and prioritized) available network. It can be controlled from any client using a socket. For configuring new networks, the control interface can be used to add new neworks. The latest development version (which is in edgy as well) also introduces dbus bindings. Btw, NetworkManager relies on wpasupplicant as well for roaming AFAIUI.
For this spec, I'd suggest that a roaming policy daemon is designed, which integrates into wpasupplicant as 'action script'. wpasupplicant calls this action script each time a network is disconnected or connected. See wpa_cli(8) - parameter -a.
- -- Reinhard Tartler