Bugfix: Always use the real overhead on a path. This fixes a deadlock         situation experienced with SSH/SCTP.
Bugfix: Always use the real overhead on a path. This fixes a deadlock
        situation experienced with SSH/SCTP.

ossy-szeged/sctp-refimpl,ossy-szeged/sctp-refimpl,ossy-szeged/sctp-refimpl,ossy-szeged/sctp-refimpl,ossy-szeged/sctp-refimpl,ossy-szeged/sctp-refimpl,ossy-szeged/sctp-refimpl,ossy-szeged/sctp-refimpl,ossy-szeged/sctp-refimpl