Mikrotik RB493G AR8316 switch0/ETH0 cannot be managed

Username: betelgeux1

Origin: https://bugs.openwrt.org/index.php?do=details&task_id=1656

Exists on OpenWRT 14.xx and 15.xx, LEDE 17.xx and Trunk

The behaviour is identical to issues reported on RB951G and RB2011 models.

See historical details:

https://github.com/openwrt/openwrt/issues/352

https://lists.openwrt.org/pipermail/openwrt-devel/2014-December/030216.html

and

FS#1020

DHCPDISCOVER/DHCPOFFER events logged no ACK/ACCEPT found. Switch1 works without issue.

I have been able to work around the issue by cross-connecting the PoE/

WAN

port to switch0 LAN4 and turning off eth0 CPU. This allows me to use all remaining ports. It’s a horrible kludge, I’m only mentioning it as a temporary workaround.