ofono: Fix shared usage of interface index
IPv4 and IPv6 share the interface index value in the network_context structure.
Because of that, they should not overwrite it with -1 every time a Settings
or IPv6.Setting modem property is received.
Problem observed when a modem was first reporting IPv4 Settings, with a valid
interface name and method dhcp. And then IPv6.Settings with method=OFF and
no interface name.
In that case, extract_ipv6_settings would wrongly set context->index = -1
causing the set_connected() fail and modem being incorrectly kept disconnected.
1 file changed
