Core router breaking dhcp of uplink #1045
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bug
Something isn't working
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Details on the last incidentThe `newyorck` network went offline (no connection to the internet possible). I connected to the core router and got the logs. Apparently there was a restart of the freifunk core router 4 minutes earlier. |
The ips and interfaces of the core routerThe tcpdump of interface `br-uplink` on the coreThe tcpdump of interface `switch0.50@switch0` on the coreTrying to connect to the telekom router using dhcp on port enp0s25 of my fedora laptop I got the following ipsTrying to connect to the telekom router using dhcp on port enp0s25 of my fedora laptop I got the following tcpdumpVerifying that I can reach the telekom router and the internet, when using a static ip on my fedora laptopCore logs after I plugged in the edgerouter between core and uplink:Logs and state of the telekom router
There is nothing to see in the logs: Notes:
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TLDR
On the
newyorcklocation we encountered multiple times that the core router lost connection to the telkom router that is used as uplink. In these situations not only the core, but also other devices in the network weren't able to connect via dhcp to the uplink anymore. Reboots did not fix it. We needed to do a full reset of the telekom router. So it is a problem on the telekom router, but seems to be triggered by the freifunk setup, as before there were no such problems. Telekom support did not help, but provided us with a newer version of their router. This didn't fix it, the problems still happen on the current modelSpeedportSmart 4.For now we put an edgerouter with a static ip between the core and the uplink. So this should work, but is not a solution to the problem.
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