[j-nsp] SRX, UDP traffic, routing asymmetry

[Per Granath]

Perhaps these are useful:

http://kb.juniper.net/InfoCenter/index?page=content&id=KB25094
http://kb.juniper.net/InfoCenter/index?page=content&id=KB24566


> Does the SRX do something "special" with asymmetric UDP flows? When I
> say UDP I mean UDP generically, because I'm aware of special cases like "set
> security flow allow-dns-reply". I have an ever-growing suspicion that we are
> throwing packets on the floor in certain circumstances.