I was observing ethernet link state and incoming dhcp requests on the gateway connected to a home node via the home node's wan port while someone was saving changes in the dashboard and observed the following on each save:
Jul 11 00:34:04 slim kernel: [17342.801309] e1000e: eth0 NIC Link is Down
Jul 11 00:34:05 slim kernel: [17344.439080] e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: Rx/Tx
Jul 11 00:34:05 slim kernel: [17344.439094] e1000e 0000:00:19.0 eth0: 10/100 speed: disabling TSO
Jul 11 00:34:10 slim dnsmasq-dhcp[11749]: DHCPDISCOVER(eth0)
Jul 11 00:34:10 slim dnsmasq-dhcp[11749]: DHCPOFFER(eth0) 172.23.0.199
Jul 11 00:34:10 slim dnsmasq-dhcp[11749]: DHCPREQUEST(eth0) 172.23.0.199
Jul 11 00:34:10 slim dnsmasq-dhcp[11749]: DHCPACK(eth0) 172.23.0.199
I was observing ethernet link state and incoming dhcp requests on the gateway connected to a home node via the home node's wan port while someone was saving changes in the dashboard and observed the following on each save: