The lwIP core code is distributed under a 3 clause BSD-style license. Confirmation has been
received from Adam Dunkels that the existing public lwIP documentation is also covered
by this license.
The original public
eCos port included elements distributed under the eCos license.
As a result of the substantial changes made by eCosCentric, significant portions of the
eCos port of lwIP in eCosPro® are covered by the
eCosPro License.