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Date: Sun, 30 Jan 2011 08:40:48 +0200
From: Zeus V Panchenko <zeus@ibs.dn.ua>
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Subject: Re: Problem with re0
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another detail for this nic

dmidecode
Base Board Information
        Manufacturer: ASUSTeK Computer INC.
        Product Name: AT5NM10-I
        Version: Rev x.0x
        Serial Number: MT7006K15200322

uname -a
FreeBSD 8.2-PRERELEASE amd64 

system was cvsup-ed 2011.01.20

if_re.c,v 1.160.2.17 2011/01/15 00:32:15 yongari

dmesg
rgephy0: <RTL8169S/8110S/8211B media interface> PHY 1 on miibus0
rgephy0:  10baseT, 10baseT-FDX, 10baseT-FDX-flow, 100baseTX, 100baseTX-FDX, 100baseTX-FDX-flow, 1000baseT, 1000baseT-master, 1000baseT-FDX, 1000baseT-FDX-master, 1000baseT-FDX-flow, 1000baseT-FDX-flow-master, auto, auto-flow
re0: Ethernet address: 20:cf:30:89:5e:95
re0: [FILTER]

pciconf -lv
re0@pci0:2:0:0: class=0x020000 card=0x83a31043 chip=0x816810ec rev=0x03 hdr=0x00
    vendor     = 'Realtek Semiconductor'
    device     = 'Gigabit Ethernet NIC(NDIS 6.0) (RTL8168/8111/8111c)'
    class      = network
    subclass   = ethernet


while connected directly NIC <-> NIC they flaps too

so, the issue with switch related causes can be excluded i believe

-- 
Zeus V. Panchenko
IT Dpt., IBS ltd			      	        GMT+2 (EET)