Date: Sat, 30 Jun 2018 17:05:23 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 229432] 11.2 network em driver - connection link flaps Message-ID: <bug-229432-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=229432 Bug ID: 229432 Summary: 11.2 network em driver - connection link flaps Product: Base System Version: 11.2-RELEASE Hardware: i386 OS: Any Status: New Severity: Affects Many People Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: deaven@deaven.net Created attachment 194795 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=194795&action=edit dmesg output for (working) 11.1 system Seemingly uneventful upgrade from 11.1-RELEASE-p11 to 11.2-RELEASE-p0, resulted in constant link state changes running the new kernel: Jun 30 11:00:06 hellcat kernel: em1: link state changed to DOWN Jun 30 11:00:06 hellcat dhclient: New IP Address (em1): 24.211.23.77 Jun 30 11:00:06 hellcat dhclient: New Subnet Mask (em1): 255.255.240.0 Jun 30 11:00:06 hellcat dhclient: New Broadcast Address (em1): 255.255.255.255 Jun 30 11:00:06 hellcat dhclient: New Routers (em1): 24.211.16.1 Jun 30 11:00:10 hellcat kernel: em1: link state changed to UP Jun 30 11:00:10 hellcat kernel: em1: link state changed to DOWN Jun 30 11:00:10 hellcat dhclient: New IP Address (em1): 24.211.23.77 Jun 30 11:00:10 hellcat dhclient: New Subnet Mask (em1): 255.255.240.0 Jun 30 11:00:10 hellcat dhclient: New Broadcast Address (em1): 255.255.255.255 Jun 30 11:00:10 hellcat dhclient: New Routers (em1): 24.211.16.1 Jun 30 11:00:14 hellcat kernel: em1: link state changed to UP Jun 30 11:00:14 hellcat kernel: em1: link state changed to DOWN The connection is the WAN side of a FreeBSD router, connected to a Motorola SURFboard SB6141 DOCSIS 3.0 Cable Modem. During this activity, ISP connection up/down links are stable, only ethernet link is changing. It stays up for few hundred milliseconds, enough to route some traffic but obviously frequent dropouts. New ethernet cable, various warm and cold reboots of modem and FreeBSD box, turning off pf service all made no difference. Also confirmed running correct 11.2 config using "freebsd-update IDS". Rolling back to 11.1, immediately works again. This system has historically experienced link changes (which I assumed were associated with ISP issues) about once per 3 months, link goes down and comes back up within a minute. Here's the em part of kernel message during 11.1 boot: em1: <Intel(R) PRO/1000 Network Connection 7.6.1-k> port 0x1000-0x101f mem 0x80020000-0x8003ffff,0x80000000-0x8001ffff,0x80040000-0x80043fff irq 17 at device 0.0 on pci2 em1: Using MSIX interrupts with 3 vectors em1: Ethernet address: 00:22:4d:ac:a6:f0 I've attached the full dmesg output as well. -- You are receiving this mail because: You are the assignee for the bug.
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