Potential DNS issues with brand new 7.2 install - local ssh & ping ok, no internet/outside access

[pgis]

Just installed 7.2 on some new servers that came in.

On the local network the Web UI, SSH, and pinging work as expected.

interfaces file from a host with the issue:

auto lo
iface lo inet loopback

iface enp5s0f0 inet manual

auto vmbr0
iface vmbr0 inet static
        address 192.168.74.25/24
        gateway 192.168.74.1
        bridge-ports enp5s0f0
        bridge-stp off
        bridge-fd 0

iface enp5s0f1 inet manual

I put 8.8.8.8 in during installation as the DNS server but I dont see it here...

ip a output:

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: enp5s0f0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master vmbr0 state UP group default qlen 1000
    link/ether a0:36:9f:40:26:28 brd ff:ff:ff:ff:ff:ff
3: enp5s0f1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether a0:36:9f:40:26:2a brd ff:ff:ff:ff:ff:ff
4: vmbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether a0:36:9f:40:26:28 brd ff:ff:ff:ff:ff:ff
    inet 192.168.74.25/24 scope global vmbr0
       valid_lft forever preferred_lft forever
    inet6 fe80::a236:9fff:fe40:2628/64 scope link
       valid_lft forever preferred_lft forever

I can ssh into 192.168.74.25 and then ping around locally without an issue.

ping 8.8.8.8 (or anywhere else outside) fails.

I also ran a network scan before choosing .25 address...

I've got some 7.1 hosts I did recently and I dont remember running into this issue... maybe I goofed something up during install? any ideas?

Thanks in advance...

 

[bbgeek17]

Its highly unlikely that its a DNS issue since your tests seems to involve ping by numerical IP address and they are failing.
If you specified the DNS server then its probably in /etc/resolv.conf
However, if you can do inbound and outbound traffic on your LAN, but not outside of your LAN (i.e. to internet, 8.8.8.8), then the issue is likely in your router. Either what is specified is wrong, or your have some restrictions in place.

Good luck.

---

Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox

 

[pgis]

Its highly unlikely that its a DNS issue since your tests seems to involve ping by numerical IP address and they are failing.

---

Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox

this is a good point I missed.

I'm still puzzled by this though... turned off all firewalls... I think I'm going to try to swithc to dhcp or another address and see what happens...

edit: dhcp/new IP resulted in no change. The local network has no limiting appliances in place, new computers and VMs (on another pve server) get DHCP IPs and are connected with no issue. I'm currently stumped...

EDIT2: I am in fact an idiot, I discovered this networking issue with a failed wget, then proceeded to troubleshoot using ping cmds which were all getting rejected for I dont know what reason... but internet is functional... and has likely been functional for 90% of my troubleshooting