K 10
svn:author
V 6
archie
K 8
svn:date
V 27
1999-12-01T22:31:32.000000Z
K 7
svn:log
V 389
The functions m_copym() and m_copypacket() return read-only copies,
because in the case of mbuf clusters they only increment the reference
count rather than actually copying the data.

Add comments to this effect, and add a new routine called m_dup() that
returns a real, writable copy of an mbuf chain.

This is preliminary work required for implementing 'ipfw tee'.

Reviewed by:	julian

END