I find with Turris that at times, probably when some error occurs, even though service is restored by the attached cable modem, Internet (at least DNS) access goes down and remains down until I reboot.
As follows:
dcampbel@LATITUDE ~
$ ssh root@192.168.16.1
root@192.168.16.1's password:
BusyBox v1.29.3 () built-in shell (ash)
_______ _ _ _____ _____ _____ _____
|__ __|| | | || __ \ | __ \ |_ _| / ____|
| | | | | || |__) || |__) | | | | (___
| | | | | || _ / | _ / | | \___ \
| | | |__| || | \ \ | | \ \ _| |_ ____) |
|_| \____/ |_| \_\|_| \_\|_____||_____/
root@turris:~# ping www.google.com
ping: unknown host www.google.com
root@turris:~# reboot
root@turris:~# Connection to 192.168.16.1 closed by remote host.
Connection to 192.168.16.1 closed.
dcampbel@LATITUDE ~
$ ping www.google.com
PING www.google.com (216.58.196.132): 56 data bytes
64 bytes from 216.58.196.132: icmp_seq=0 ttl=55 time=32 ms
64 bytes from 216.58.196.132: icmp_seq=1 ttl=55 time=22 ms
----www.google.com PING Statistics----
2 packets transmitted, 2 packets received, 0.0% packet loss
round-trip (ms) min/avg/max/med = 22/27/32/27
dcampbel@LATITUDE ~