seems to be some kind of firewall / fragmentation issue using openssh
on newest experimental running on rt-n16 (broadcom 47). This router runs quit well on previous 1.7.1 build excluding wifi which I do not use. On previous build I did not have this openssh problem.
symptom:
openssh logs in fine from putty, but returns "connection reset by peer" when connecting from linux ssh client tried on debian and android client.
all is standard setup with fresh install and defalt settings.