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Stumped.. AC68U not passing through _some_ clients

Discussion in 'ASUS AC Routers & Adapters' started by Semantical, Jan 17, 2020.

  1. Semantical

    Semantical New Around Here

    Nov 24, 2018
    Not really sure how to describe this. I've been away for a couple of weeks, so nothing that I can think could/would have changed and I'm certain it was working.

    I have an AC68U as my primary gateway with a LAN IP of DHCP is on, but I have a few statically assigned addresses for various things. ALL wired connections through to the AC68U are made via Devolo powerline adapters (PLA) which work rather well for our house.

    Hanging off one PLA is another very basic router (IP setup in bridge mode to go from through to There are a few boxes on x.x.2.0

    From ANY machine connected via WIFi on the AC68U I can ping 1.53 and see the 2.0 subnet.

    From two other PLA's I can still see both 1.53 and the 2.0 subnet.

    BUT from anything connected to one PLA I can't even ping 1.53 let alone see 2.x. And yet I can see everything else on

    There appears to be nothing setup on the bridge to refuse connections from anything. Indeed the IP addresses of devices on the non-working PLA machines are random and span the entire subnet.

    I can't see anything on the AC68U which prevents the connection to 1.53 and the routing table looks about right to me

    Destination Gateway Genmask Flags Metric Ref Use Type Iface * UH 0 0 0 vlan2 * UH 0 0 0 tun21 * UH 0 0 0 WAN0 ppp0 UG 0 0 0 tun21 UG 2 0 0 LAN br0 * U 0 0 0 LAN br0 * U 0 0 0 vlan2 * U 0 0 0 MAN0 vlan3880
    default UG 0 0 0 WAN0 ppp0

    Can anyone suggest anything I can look at / try next?