mpd: PPTP call failed

[Nikolai SAOUKH]

| > | >          set link type pptp
| > | >          set pptp enable originate incoming outcall
| > | >          set pptp self 81.75.144.245
| > |                          ^^^^^^^^^^^^^
| > | Most likely your mpd box doesn't own that IP address.
| > No, ther order of lines is significant (undocumented feature of mpd). Try this
| > 	set link type pptp
| > 	set pptp self 81.75.144.245
| > 	set pptp enable originate incoming outcall
| The order shouldn't matter -- if it does that's a bug (not a feature :-)
| What exactly happens when it doesn't work?

When 'set pptp self ...' is not a second line, then mpd ignore it and binds
to all interfaces. In my case, at least.