scrub in quick from any to any
scrub in on ! lo0
scrub in no-df no-df
scrub out min-ttl 4 min-ttl 5
scrub in all min-ttl 256 
scrub out min-ttl 65536
scrub in from localhost to localhost max-mss 512 max-mss 1280
scrub on lo0 fragment crop fragment crop
scrub in on lo0 from any to localhost fragment drop-ovl fragment crop
scrub in on lo0 from any to 127.0.0.1 fragment reassemble fragment drop-ovl
scrub from localhost random-id random-id