From: bugzilla@dpdk.org
To: dev@dpdk.org
Subject: [DPDK/ethdev Bug 1920] Multicast packets dropped with multicast mode enabled on CX6 NIC
Date: Tue, 31 Mar 2026 16:17:08 +0000 [thread overview]
Message-ID: <bug-1920-3@http.bugs.dpdk.org/> (raw)
http://bugs.dpdk.org/show_bug.cgi?id=1920
Bug ID: 1920
Summary: Multicast packets dropped with multicast mode enabled
on CX6 NIC
Product: DPDK
Version: unspecified
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: Normal
Component: ethdev
Assignee: dev@dpdk.org
Reporter: dmarx@iol.unh.edu
Target Milestone: ---
testpmd> set allmulti all off
testpmd> show port info all
********************* Infos for port 0 *********************
MAC address: B8:3F:D2:52:B7:24
Device name: 0000:81:00.0
Driver name: mlx5_pci
Firmware-version: 26.42.1000
Devargs:
Connect to socket: 1
memory allocation on the socket: 1
Link status: up
Link speed: 25 Gbps
Link duplex: full-duplex
Autoneg status: On
MTU: 1500
Promiscuous mode: disabled
Allmulticast mode: disabled
Sent packet: Ether(dst='01:00:5E:00:00:01',
src='a0:88:c2:95:79:c4')/IP(src='192.168.100.3',
dst='192.168.101.3')/Raw(load=b'xxxxx')
sudo ethtool -i enp129s0f0np0
driver: mlx5_core
version: 24.07-0.6.1
firmware-version: 26.42.1000 (MT_0000000531)
expansion-rom-version:
bus-info: 0000:81:00.0
supports-statistics: yes
supports-test: yes
supports-eeprom-access: no
supports-register-dump: no
supports-priv-flags: yes
uname -m
x86_64
DPDK version: 26.03 rc2
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