dbus-broker closing connection to br1

[Mdasoh Kyaeppd]

sometimes I get this message: Jul 22 03:05:18 whatever dbus-broker[836]: Peer :1.800185 is being disconnected as it does not have the resources to receive a reply or unicast signal it expects.
about when I lose connectivity through my firewall vm (virtual machine).
the server is configured with br0 and br1, where br1 has no ip address assigned to it, except it's bridged to eth0 and tap0 and tap0 bears my public ip address inside the vm.
the other side of eth0 is connected to the local cable modem.
if I unplug that cable for a few minutes and plug it back in, I've been known to regain connectivity that way.
if I were to assign an address on the wan network to br1, that would allow remote access to the local machine, which I don't want.
this system is running debian trixie with systemd.
It would be ideal to find out how that message originated and disable the mechanism that is disabling my port.

when connected, with speedtest.net I have 177.32 Mbps down and 175.22 Mbps up.

update: I got this message again today, so I'll post the full message from journalctl -xe;

Jul 30 08:08:34 whatever dbus-broker[836]: Peer :1.879502 is being disconnected as it does not have the resources to receive a reply or unicast sign>
░░ Subject: Peer :1.879502 could not receive a requested message
░░ Defined-By: dbus-broker
░░ Support: https://groups.google.com/forum/#!forum/bus1-devel
░░
░░ The peer org.freedesktop.DBus failed to receive a message it requested
░░ and is therefore disconnected. The message in question could be a method
░░ error or reply or a broadcast the peer has subscribed to.
░░
░░ Disconnecting the peer ensures that no messages are silently dropped.