yeah

Will not cause eth0 to drop

basically if your config is correct, then it seems like it doesnt matter

but your config might be incorrect

what router do you have?

It is a dhcp mode to pick up ip from the modem

@Grenade123 unifi usg

have you tried restarting it by chance?

Yes

Now get this, isp modem showed a restart on the same time as my eth0 goes down

tried resetting the dhcp?

>but random restart is not indicative of hardware failure

@Grenade123 you mean the modem dhcp server

It gotnpower cycled

https://community.ubnt.com/t5/UniFi-Routing-Switching/How-to-reset-prune-DHCP/td-p/2079835

Wan is having issie

Not lan

Different

Dhcp is to correct lan issues

But wan is handled by modem

Otherwise you will have modem acting as router and router being router, you will get 2 routers

It does look like a DHCP client issue involving eth0.

Not really

Their modem gives a private ip on startup, then gives a public ip on link establish with internet

"?Looks like the dhcp client under eth0 made zebra thinking the broadcast address wasn't right. If WAN/Internet access is fine then there isn't much to worry about. You can try renew dhcp for eth0 see if the message would occur again, also you can check "show interface ethernet eth0", "show ip route", and "show ip route forward" outputs see if anything doesn't look right"

It is still routing fine since internet worked for days on end

that was from the post i linked earlier

but on a different note, have you tried power cycling the modem?

and any other routers on the network

Yes

The error was after the power cycle, about 1 hr after

Where on earth is it getting '255.255.255.255/24 != 82.xx.xxx.xxx'? The IP settings on eth0 must be jacked up.

Dhcp from isp is stupid

It goes from private to public

I read that as ICP

I'm like

the fuck do juggalos have to do with this

DHCP is standard for ISP's.

Not when they go from private ip to public ip

That doesn't matter for the DHCP configuration of the public interface on the home router.

NAT lies above the physical interface configuration.