can not ping to DNS Server but other IPs are OK

[Homer-S]

Hello,
I am running 7.4-17.
I recognized that there is some issue because apt update were not able to receive new packages.
I tried from my PVE host:
ping -c 4 192.168.100.1 #(my fritz box)
or ping -c 4 google.com

both results in all lost

if I try an other internal IP 192.168.100.22 it is working

If I am pining from inside an VM everything is working like expected.

Where should I look for to fix this?

Thanks

 

[sb-jw]

Please post your network configuration and the configured DNS servers.

 

[Homer-S]

I hope I am posing the right ones:

The second DNS entry here had been added recently for testing reason after the issue occured. on IP 2 there is an addguard home server. But it did not solve it

 

[sb-jw]

Delete the search domain and then see if the name resolution works. Apparently you also have a problem with your gateway, so please also ip r.

 

[Homer-S]

I deleted it. Is there a reboot necessary?

ping -c 4 192.168.100.1
PING 192.168.100.1 (192.168.100.1) 56(84) bytes of data.

--- 192.168.100.1 ping statistics ---
4 packets transmitted, 0 received, 100% packet loss, time 3053ms

is this what you needed?

ip r
default via 192.168.100.1 dev vmbr0 proto kernel onlink
192.168.100.0/24 dev vmbr0 proto kernel scope link src 192.168.100.10

 

[Homer-S]

BTW, it worked with this config for years ...