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Date:      Wed, 24 Aug 2016 11:56:18 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-net@FreeBSD.org
Subject:   [Bug 193452] Dell PowerEdge 210 II -- Kernel panic bce (broadcom)
Message-ID:  <bug-193452-2472-bO4wJIFxOQ@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-193452-2472@https.bugs.freebsd.org/bugzilla/>
References:  <bug-193452-2472@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D193452

M=C3=A1rcio Elias <marcioelias@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |marcioelias@gmail.com

--- Comment #2 from M=C3=A1rcio Elias <marcioelias@gmail.com> ---
Hi, we get the same problem with same hardware on a 10.3-RELEASE. We get th=
is
in a Dell R210 II and a T210, both with the same driver loaded, and both
running IPNAT to translate a lot o private IP's to Public IP's (we are a IS=
P).

The strange is that this error not happens on the time of more load, is ran=
dom,
can occur any time.

After change sysctl variables related to network tunning the crashes get le=
ss
frequent, but the max uptime that we can get is about 2 days.

Below is the Sysctl variables that we change.

net.bpf.optimize_writers=3D1
kern.random.sys.harvest.ethernet=3D0
kern.random.sys.harvest.point_to_point=3D0
kern.random.sys.harvest.interrupt=3D0
net.inet.raw.maxdgram=3D16384
net.inet.raw.recvspace=3D16384
net.route.netisr_maxqlen=3D2048
net.inet.ip.redirect=3D0
kern.ipc.shmmax=3D2147483648

And this on the /boot/loader.conf

net.link.ifqmaxlen=3D2048
net.isr.maxthreads=3D4
net.isr.defaultqlimit=3D2048

Also we enable LARGE_NAT on /usr/src/sys/contrib/ipfilter/netinet/ip_nat.h.

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