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Asus RT-AC66U, only 3 of 4 LAN ports working?

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Slothrop

New Around Here
I have a somewhat strange issue with my RT-AC66U (running Merlin 380.63_2) - I can only connect three units to the LAN ports. I have tried different cables, and that does not seem to be the issue. Strangely enough, it also does not seem to depend on the specific port used, as it first was one port that didn't work, and after fiddling around a bit, that port works fine while another one seems to have given up.. This has not always been the case and only started recently, but I have tried rebooting the router a few times and no luck..

If logging into the router (by ssh) and looking at ifconfig, I can see eth0, eth1 and eth2 (plus br0, lo, tun21 and vlan1).

Is this something anyone else recognize? And if not, how should I proceed to try and hunt down the problem.. can I look at some log file et.c.?

Thanks in advance,
Slothrop
 

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