From Address Forged

Wilhelm and other colleagues,

it appears that the header forging did only occur in an effort to
correct mistakes made earlier.  Repeat: the updates that caused the
problems originally were not done using forged headers.  This does not
mean header forging was not very bad judgement, but at least it occurred
only in an effort to correct earlier mistakes.  The RIPE NCC will work
with Transpac on a post-mortem analysis.  More news as it develops. 

Daniel