This disables the dns bootstrapper on current dcrlnd networks since
the corresponding seeders aren't up yet.
It does so by clearing the hard coded DNS seeder addresses and adding a
special case that exits early if no addresses are returned by the
bootstrapping process.
It also fixes a logic error condition where bootstrapping wasn't
re-enabled after the backoff period after the initial bootstrapping
phase.
This disables the dns bootstrapper on current dcrlnd networks since the corresponding seeders aren't up yet.
It does so by clearing the hard coded DNS seeder addresses and adding a special case that exits early if no addresses are returned by the bootstrapping process.
It also fixes a logic error condition where bootstrapping wasn't re-enabled after the backoff period after the initial bootstrapping phase.