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spencer
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Joined: Thu Oct 07, 2021 12:57 pm

pppoe reconnecting multiple times and DoH throwing errors to logs

Mon Dec 05, 2022 12:47 am

Hi, first question about pppoe
after restarting router something like this happens
dec/03 08:31:10 system,error,critical router rebooted without proper shutdown, probably power outage 
dec/03 08:31:10 dns,error DoH server connection error: Network is unreachable 
dec/03 08:31:12 pppoe,ppp,info pppoe-fiber: initializing... 
dec/03 08:31:12 pppoe,ppp,info pppoe-fiber: connecting... 
dec/03 08:31:18 interface,info vlan35 link up 
dec/03 08:31:18 pppoe,ppp,info pppoe-fiber: terminating... 
dec/03 08:31:18 pppoe,ppp,info pppoe-fiber: disconnected 
dec/03 08:31:18 pppoe,ppp,info pppoe-fiber: initializing... 
dec/03 08:31:18 pppoe,ppp,info pppoe-fiber: connecting... 
dec/03 08:31:18 pppoe,ppp,info pppoe-fiber: terminating... 
dec/03 08:31:18 pppoe,ppp,info pppoe-fiber: disconnected 
dec/03 08:31:18 pppoe,ppp,info pppoe-fiber: initializing... 
dec/03 08:31:18 pppoe,ppp,info pppoe-fiber: connecting... 
dec/03 08:31:18 pppoe,ppp,info pppoe-fiber: terminating... 
dec/03 08:31:18 pppoe,ppp,info pppoe-fiber: disconnected 
dec/03 08:31:18 pppoe,ppp,info pppoe-fiber: initializing... 
dec/03 08:31:18 pppoe,ppp,info pppoe-fiber: connecting... 
dec/03 08:31:18 pppoe,ppp,info pppoe-fiber: terminating... 
dec/03 08:31:18 pppoe,ppp,info pppoe-fiber: disconnected 
dec/03 08:31:18 pppoe,ppp,info pppoe-fiber: initializing... 
dec/03 08:31:18 pppoe,ppp,info pppoe-fiber: connecting... 
dec/03 08:31:18 pppoe,ppp,info pppoe-fiber: terminating... 
dec/03 08:31:18 pppoe,ppp,info pppoe-fiber: disconnected 
dec/03 08:31:18 pppoe,ppp,info pppoe-fiber: initializing... 
dec/03 08:31:18 pppoe,ppp,info pppoe-fiber: connecting... 
dec/03 08:31:21 interface,info ether2 link up (speed 1G, full duplex) 
dec/03 08:31:24 interface,info ether1 link up (speed 1G, full duplex) 
Why is it trying so hard? :) I mean, so many tries in the very same second. It works, doesn't influence anything else, but looks bad and I wonder what could be the reason.

And my second question is about DNS over Http.
When the internet in inaccessible I see many errors in the logs like this:
dec/03 08:31:32 dns,error DoH server connection error: Network is unreachable 
dec/03 08:31:32 dns,error DoH server connection error: Network is unreachable 
dec/03 08:31:32 dns,error DoH server connection error: Network is unreachable 
dec/03 08:31:32 dns,error DoH server connection error: Network is unreachable 
dec/03 08:31:32 dns,error DoH server connection error: Network is unreachable 
dec/03 08:31:32 dns,error DoH server connection error: Network is unreachable 
dec/03 08:31:32 dns,error DoH server connection error: Network is unreachable 
Also multiple errors in the same second. Why is it even trying to send anything if the pppoe is down?
 
Sob
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Joined: Mon Apr 20, 2009 9:11 pm

Re: pppoe reconnecting multiple times and DoH throwing errors to logs

Mon Dec 05, 2022 1:13 am

I don't know about first one. But DoH trying even when it can't succeed, it's simply because it doesn't know it in advance. It needs to resolve something, either because there was external request or because router itself needs it, so it tries to connect to configured server... and oops, it failed. There's nothing telling the system that PPPoE is the only way to internet and that everything should just give up when it's not up.

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