> window scaling shift 0 is allowed. It just mean we support window > scaling, but the shift is 0. > From the dump, it looks like the other side is a Linux box. > > > Could Sephe give a suggestion about what is the problem here and how I > > can solve it? > > As Joerg has suggested, window scaling option may be problematic with > pf. You could try set net.inet.tcp.rfc1323 to 0
Here is another dump this time with rfc1323, sack and smartsack disabled. Do you notice something weird here? Thanks, Petr
postfix_dump2.tgz
Description: application/tgz
