I also have this issue.
Ubuntu, kernel:
20.04, 5.4.105-generic
Netplan configuration:
network:
ethernets:
ibp73s0:
dhcp4: true
renderer: NetworkManager
version: 2
card:
Mellanox connectx-3
Adapter info (lspci -v):
49:00.0 Network controller: Mellanox Technologies MT27500 Family [ConnectX-3]
Subsystem: Mellanox Technologies MT27500 Family [ConnectX-3]
Flags: bus master, fast devsel, latency 0, IRQ 116, NUMA node 0
Memory at e7500000 (64-bit, non-prefetchable) [size=1M]
Memory at e6000000 (64-bit, prefetchable) [size=8M]
Expansion ROM at e7400000 [disabled] [size=1M]
Capabilities: [40] Power Management version 3
Capabilities: [48] Vital Product Data
Capabilities: [9c] MSI-X: Enable+ Count=128 Masked-
Capabilities: [60] Express Endpoint, MSI 00
Capabilities: [c0] Vendor Specific Information: Len=18 <?>
Capabilities: [100] Alternative Routing-ID Interpretation (ARI)
Capabilities: [148] Device Serial Number f4-52-14-03-00-2a-c1-50
Capabilities: [154] Advanced Error Reporting
Capabilities: [18c] Secondary PCI Express
Kernel driver in use: mlx4_core
Kernel modules: mlx4_core
Mellanox OFED version:
5.0-2.1.8.0-ubuntu20.04-x86_64
Network manager configuration:
[main]
plugins=ifupdown,keyfile
dns=default
[ifupdown]
managed=false
[device]
wifi.scan-rand-mac-address=no
[keyfile]
unmanaged-devices=interface-name:ibp73s0
Running netplan apply does not configure the interface. Running
'dhclient ibp73s0' does. Running 'netplan apply' after doing that causes
the interface to lose it's IP and return to an unconfigured state.
I have a whole bunch of machines that are due to be upgraded from 16.04
before it goes end of life and they all have inifiniband interfaces
configured with dhcp via /etc/network/interfaces (which works fine).
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https://bugs.launchpad.net/bugs/1863529
Title:
netplan not sending DHCP request of IPoIB interfaces.
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