No Network after boot

[Ervoreg]

Hello,

I have a little problem with my proxmox server.

When it starts, I have no network. I can't ping my gateway or any ip on my network. I also can't contact my proxmox from another pc (ping or SSH or Web GUI).

When I do an ip a I see the loopback and the vmbr0 but the eno1 card does not appear.

By trying to down/up the eno1 card I get "Cannot find device "eno1"

BUT when I "reboot" the proxmox, everything works fine.

If someone has an idea to solve this little thing, because it's a little painful to reboot the server
Thanks

/etc/network/interfaces

auto lo
iface lo inet loopback

iface eno1 inet manual

auto vmbr0
iface vmbr0 inet static
        address 192.168.0.198
        netmask 255.255.255.0
        gateway 192.168.0.1
        bridge_ports eno1
        bridge_stp off
        bridge_fd 0

ip a result after BOOT

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
3: vmbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN group default qlen 1000
    link/ether 2a:bf:de:16:d9:3a brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.198/24 brd 192.168.0.255 scope global vmbr0
       valid_lft forever preferred_lft forever
    inet6 fe80::28bf:deff:fe16:d93a/64 scope link
       valid_lft forever preferred_lft forever

ip a result after REBOOT

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: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master vmbr0 state UP group default qlen 1000
    link/ether e8:40:f2:ed:28:b6 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 e8:40:f2:ed:28:b6 brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.198/24 brd 192.168.0.255 scope global vmbr0
       valid_lft forever preferred_lft forever
    inet6 2a01:e35:8b9f:e140:ea40:f2ff:feed:28b6/64 scope global dynamic mngtmpaddr
       valid_lft 86254sec preferred_lft 86254sec
    inet6 fe80::ea40:f2ff:feed:28b6/64 scope link
       valid_lft forever preferred_lft forever

 

[Ervoreg]

My pveversion if someone need it :

root@proxmox:~# pveversion -v
proxmox-ve: 5.4-2 (running kernel: 4.15.18-20-pve)
pve-manager: 5.4-13 (running version: 5.4-13/aee6f0ec)
pve-kernel-4.15: 5.4-8
pve-kernel-4.15.18-20-pve: 4.15.18-46
pve-kernel-4.15.18-18-pve: 4.15.18-44
pve-kernel-4.15.18-12-pve: 4.15.18-36
corosync: 2.4.4-pve1
criu: 2.11.1-1~bpo90
glusterfs-client: 3.8.8-1
ksm-control-daemon: 1.2-2
libjs-extjs: 6.0.1-2
libpve-access-control: 5.1-12
libpve-apiclient-perl: 2.0-5
libpve-common-perl: 5.0-54
libpve-guest-common-perl: 2.0-20
libpve-http-server-perl: 2.0-14
libpve-storage-perl: 5.0-44
libqb0: 1.0.3-1~bpo9
lvm2: 2.02.168-pve6
lxc-pve: 3.1.0-6
lxcfs: 3.0.3-pve1
novnc-pve: 1.0.0-3
proxmox-widget-toolkit: 1.0-28
pve-cluster: 5.0-38
pve-container: 2.0-40
pve-docs: 5.4-2
pve-edk2-firmware: 1.20190312-1
pve-firewall: 3.0-22
pve-firmware: 2.0-7
pve-ha-manager: 2.0-9
pve-i18n: 1.1-4
pve-libspice-server1: 0.14.1-2
pve-qemu-kvm: 3.0.1-4
pve-xtermjs: 3.12.0-1
qemu-server: 5.0-54
smartmontools: 6.5+svn4324-1
spiceterm: 3.0-5
vncterm: 1.5-3
zfsutils-linux: 0.7.13-pve1~bpo2

thanks