What manages the wan interface ? /etc/network/interfaces,
statically with /etc/network/interfaces
NetworkManager, other ?
I don't have X
Which server ?
debian 9.x my server has 2 network interfaces
What does it mean exactly ?
that, suddently internet goes down... routing table is ok
Can you still reach (ping) the modem from the router ?
sure
What is the output of "traceroute 8.8.8.8" from the router ?
none
If the above works, did you check DNS resolution (with host or dig) ?
no
Did you try to reboot the modem ?
same problem thanks Pol
