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OpenStack Train
OVS 2.12
Linux 5.3 from hwe edge
Connect-X 5 running latest firmware from Mellanox.
Overlay networking configured with VXLAN for project networking.
Some instances successfully DHCP, some don't.
For those that don't:
compute:
11:51:24.926581 IP bond1.2925.node-laveran.maas.58901 >
bond1.2925.node-lepaute.maas.4789: VXLAN, flags [I] (0x08), vni 1233
IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from
fa:16:3e:e8:59:f3 (oui Unknown), length 300
gateway:
11:50:44.010864 IP bond1.2925.node-laveran.maas.58901 >
bond1.2925.node-lepaute.maas.4789: VXLAN, flags [I] (0x08), vni 1233
IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from
fa:16:3e:e8:59:f3 (oui Unknown), length 300
11:50:44.011196 IP bond1.2925.node-lepaute.maas.55067 >
bond1.2925.node-laveran.maas.4789: VXLAN, flags [I] (0x08), vni 1233
IP 172.16.0.2.bootps > 172.16.2.236.bootpc: BOOTP/DHCP, Reply, length 328
The response is send from the gateway unit to the compute unit, but is
never seen in the tcpdump.
If hardware encap is disabled on the two underlying ports/the card,
traffic flow is seen and all instances correctly DHCP configure on boot.
sudo ethtool -K enp3s0f0 hw-tc-offload off
sudo ethtool -K enp3s0f1 hw-tc-offload off
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-5.3.0-23-generic 5.3.0-23.25~18.04.1
ProcVersionSignature: Ubuntu 5.3.0-23.25~18.04.1-generic 5.3.7
Uname: Linux 5.3.0-23-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.9
Architecture: amd64
Date: Fri Nov 22 12:29:20 2019
ProcEnviron:
TERM=screen-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=C.UTF-8
SHELL=/bin/bash
SourcePackage: linux-signed-hwe-edge
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic third-party-packages uec-images
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hw-tc-offload not reliable with VXLAN
https://bugs.launchpad.net/bugs/1853592
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