On Thu, May 03, 2007 at 01:25:40PM -0500, David Young wrote: > I guess it is IP Filter's definition of offsetof(), > > % grep '^#define[[:space:]]\+offsetof(' ../../dist/ipf/netinet/* > ../../dist/ipf/netinet/ip_fil.h:#define offsetof(t,m) (int)((&((t *)0L)->m)) I guess we should #ifndef that definition... Martin