arp flood on STABLE: Was: em driver woes

From: Gleb Smirnoff (glebius_at_FreeBSD.org)
Date: 11/26/05

  • Next message: Gleb Smirnoff: "Re: bge driver, how to increase performance?" 
    Date: Sat, 26 Nov 2005 13:31:22 +0300
To: Volcane <volcane.uk@gmail.com>

    On Fri, Nov 25, 2005 at 09:12:04PM +0000, Volcane wrote:
    V> I scanned through the archive and noticed a posting there about an
    V> interrupt storm on the em driver, I am not sure if my symptoms are
    V> related so I decided on a new thread.
    V>
    V> I first installed the 6.0-RELEASE using FTP install and everything was
    V> happy, I then CVSUP'd to RELENG_6 which had an em driver update a few
    V> hours ago.
    V>
    V> Did the world and kernel and booted, on the boot with the new kernel I
    V> noticed my network was dead. I could get the initial DHCP from my
    V> server but once it got an IP it wasn't working.
    V>
    V> Further investigation with tcpdump showed me a massive amount of arp
    V> requests for my gateway IP, with replies coming back to the card.
    V> Output of 'arp -an' showed that the gateway ARP was indeed in the arp
    V> table so there shouldnt have been any reason for all the arp requests.

    This is not related to em(4). This is my mistake in last revision of
    if_ether.c. Please back it out, and your network will be alive again.

    As soon as I get it fixed I will inform you. 

    -- 
Totus tuus, Glebius.
GLEBIUS-RIPN GLEB-RIPE
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  • Next message: Gleb Smirnoff: "Re: bge driver, how to increase performance?"

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