I have a similar problem when I try to reboot the server, it says " [ *** ] A stop job is running for LSB: raise network interfa...52s / no limit). ".
Still looking for the cause, I do have 10Gbit card in the server and it is broadcom, but I dont think it is the same chipset as the ones you have..
Server is HP DL380 G8
Network card is HP
root@rdc-prox10:~# lspci -vs 07:00.0
07:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM57810 10 Gigabit Ethernet (rev 10)
Subsystem: Hewlett-Packard Company Ethernet 10Gb 2-port 530T Adapter
Physical Slot: 2
Flags: bus master, fast devsel, latency 0, IRQ 51
Memory at f6000000 (64-bit, prefetchable) [size=8M]
Memory at f5800000 (64-bit, prefetchable) [size=8M]
Memory at f57f0000 (64-bit, prefetchable) [size=64K]
[virtual] Expansion ROM at f0000000 [disabled] [size=512K]
Capabilities: [48] Power Management version 3
Capabilities: [50] Vital Product Data
Capabilities: [a0] MSI-X: Enable+ Count=32 Masked-
Capabilities: [ac] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [13c] Device Serial Number 5c-b9-01-ff-fe-de-1d-f0
Capabilities: [150] Power Budgeting <?>
Capabilities: [160] Virtual Channel
Capabilities: [1b8] Alternative Routing-ID Interpretation (ARI)
Capabilities: [1c0] Single Root I/O Virtualization (SR-IOV)
Capabilities: [220] #15
Capabilities: [300] #19
Kernel driver in use: bnx2x
Running Versions
proxmox-ve: 4.2-56 (running kernel: 4.4.13-1-pve)
pve-manager: 4.2-15 (running version: 4.2-15/6669ad2c)
pve-kernel-4.4.6-1-pve: 4.4.6-48
pve-kernel-4.4.13-1-pve: 4.4.13-56
lvm2: 2.02.116-pve2
corosync-pve: 2.3.5-2
libqb0: 1.0-1
pve-cluster: 4.0-42
qemu-server: 4.0-83
pve-firmware: 1.1-8
libpve-common-perl: 4.0-70
libpve-access-control: 4.0-16
libpve-storage-perl: 4.0-55
pve-libspice-server1: 0.12.5-2
vncterm: 1.2-1
pve-qemu-kvm: 2.5-19
pve-container: 1.0-70
pve-firewall: 2.0-29
pve-ha-manager: 1.0-32
ksm-control-daemon: 1.2-1
glusterfs-client: 3.5.2-2+deb8u2
lxc-pve: 1.1.5-7
lxcfs: 2.0.0-pve2
cgmanager: 0.39-pve1
criu: 1.6.0-1
zfsutils: 0.6.5.7-pve10~bpo80