[SOLVED] Just trying PVE 6.3 for the first time - I can't get guest network access

[marcosscriven]

In the past I used QEMU/KVM, and had bridged networking working ok with my Unifi setup. My guest VMs managed to get an IP and network/internet access.

I've now setup PVE (all defaults) and although PVE host has full network/internet access, the Ubuntu guest does not.

Config:

cat /etc/hosts
127.0.0.1 localhost.localdomain localhost
192.168.1.190 pve.home pve

# The following lines are desirable for IPv6 capable hosts

::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts[
/CODE]

[code]
cat /etc/network/interfaces
auto lo
iface lo inet loopback

iface enp6s0 inet manual

auto vmbr0
iface vmbr0 inet static
    address 192.168.1.190/24
    gateway 192.168.1.1
    bridge_ports enp6s0
    bridge_stp off
    bridge_fd 0

ip addr
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: enp6s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master vmbr0 state UP group default qlen 1000
    link/ether 3c:7c:3f:7f:58:c8 brd ff:ff:ff:ff:ff:ff
3: vmbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 3c:7c:3f:7f:58:c8 brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.190/24 brd 192.168.1.255 scope global vmbr0
       valid_lft forever preferred_lft forever
    inet6 fe80::3e7c:3fff:fe7f:58c8/64 scope link
       valid_lft forever preferred_lft forever
8: tap100i0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master fwbr100i0 state UNKNOWN group default qlen 1000
    link/ether b6:60:4e:97:07:48 brd ff:ff:ff:ff:ff:ff
9: fwbr100i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether c2:f6:12:db:24:35 brd ff:ff:ff:ff:ff:ff
10: fwpr100p0@fwln100i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master vmbr0 state UP group default qlen 1000
    link/ether 9e:c6:7e:f7:87:2b brd ff:ff:ff:ff:ff:ff
11: fwln100i0@fwpr100p0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master fwbr100i0 state UP group default qlen 1000
    link/ether c2:f6:12:db:24:35 brd ff:ff:ff:ff:ff:ff

Please could someone help here?



On the guest VM:

 

[marcosscriven]

Just one thing to add - in the guest VM, I ran tcpdump -vv. I've seem some ARP traffic, so there's at least *some* connectivity.

 

[marcosscriven]

Grrrr... Darn it, darn it, darn it.

This is a HARDWARE issue with my motherboard. Plugged in a USB3 ethernet adapter and it worked. I wasted so much time on this, and it was nothing to do with Proxmox, my routers, or the VM.

Apparently the Intel I225-V is a problem: https://www.reddit.com/r/ASUS/comments/jegprf/asus_tuf_gaming_x570pros_intel_i225v_b3_revision/

 

[marcosscriven]

Now I'm Googling 'Intel I225-V "qemu"', and found a similar problem in this forum: https://forum.proxmox.com/threads/vms-not-getting-dhcp-response-and-are-unaccessible.82383/