Date: Thu, 20 Nov 2025 02:41:28 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 291105] Intel i350 not receiving arp replies Message-ID: <bug-291105-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=291105 Bug ID: 291105 Summary: Intel i350 not receiving arp replies Product: Base System Version: 14.3-STABLE Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: dave@jetcafe.org igb0@pci0:6:0:0: class=0x020000 rev=0x01 hdr=0x00 vendor=0x8086 device=0x1521 subvendor=0x8086 subdevice=0x5001 vendor = 'Intel Corporation' device = 'I350 Gigabit Network Connection' class = network subclass = ethernet igb0: flags=1008947<UP,BROADCAST,DEBUG,RUNNING,PROMISC,SIMPLEX,MULTICAST,LOWER_UP> metric 0 mtu 1500 options=800020<JUMBO_MTU,HWSTATS> ether b4:96:91:56:32:0c inet 172.18.1.5 netmask 0xffffff00 broadcast 172.18.1.255 media: Ethernet autoselect (1000baseT <full-duplex>) status: active nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> # ping 172.18.1.7 PING 172.18.1.7 (172.18.1.7): 56 data bytes ping: sendto: Host is down # arp -an | grep 172.18.1.7 ? (172.8.1.7) at (incomplete) on igb0 expired [ethernet] Ok. So tcpdump on the .7 machine reveals: 18:36:24.446015 ARP, Request who-has 172.18.1.7 tell 172.18.1.5, length 46 18:36:24.446026 ARP, Reply 172.18.1.7 is-at 70:85:c2:c1:19:11, length 28 but tcpdump on the .5 machine simply says 18:37:44.286895 ARP, Request who-has 172.18.1.7 tell 172.18.1.5, length 28 Thus I believe I have observed the reply not getting to the destination (.5) machine. Now I have already looked at the switch involved and moved these two to a different switch. Same result. Is there something I'm missing? The relevant dmesg bits are: igb0: <Intel(R) I350 (Copper)> mem 0xdec00000-0xdecfffff,0xdef0c000-0xdef0ffff at device 0.0 on pci6 igb0: EEPROM V1.67-0 Option ROM V18-b8-p9 eTrack 0x80000fb7 igb0: Using 1024 TX descriptors and 1024 RX descriptors igb0: Using 8 RX queues 8 TX queues igb0: Using MSI-X interrupts with 9 vectors igb0: Ethernet address: b4:96:91:56:32:0c igb0: netmap queues/slots: TX 8/1024, RX 8/1024 Can anyone explain what is going on? -- You are receiving this mail because: You are the assignee for the bug.home | help
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