I have two 2820n's connected on the same subnet (but with different default gateway's) which are successfully connected via WDS.
However, sometimes http / https access to devices on the second 2820n (from the primary) will stop working. ftp, icmp, etc etc, all work fine, but web browsing stops for something like an hour each time.
I have logging and email alerts turned on, on both routers, which reveals no alerts during such issues.
Both are connected using WPA2 and shows as having an active status during such http / https downtime.
Both have active internet connections during such downtime (checked by plugging directly into each 2820n).
Both are on v : 3.3.5.2_232201.
Both use REPEATER mode instead of BRIDGE mode.