Re: IP bad-len 0

On Tuesday 05 February 2008 11:34:29 Krassimir Slavchev wrote:
> Hi,
> Can you try:
> net.inet.tcp.rfc1323=0

Not working for me. Any other thoughts?

>
> Nikolay Pavlov wrote:
> > Did someone knows what's that mean?
> >
> > root_at_cassini:~# tcpdump -n host xx.162.141.1 and port 80
> > tcpdump: verbose output suppressed, use -v or -vv for full protocol
> > decode listening on em0, link-type EN10MB (Ethernet), capture size 96
> > bytes 17:04:40.734189 IP xx.162.141.1.47484 > xxx.53.51.235.80: S
> > 3567180455:3567180455(0) win 5840 <mss 1452,sackOK,timestamp 8804899
> > 0,nop,wscale 6>
> > 17:04:40.734236 IP xx.53.51.235.80 > xx.162.141.1.47484: S
> > 3608546905:3608546905(0) ack 3567180456 win 8192 <mss 1452,nop,wscale
> > 5,sackOK,timestamp 709854070 8804899>
> > 17:04:40.925032 IP xx.162.141.1.47484 > xxx.53.51.235.80: . ack 1 win
> > 92 <nop,nop,timestamp 8804947 709854070>
> > 17:04:40.933559 IP xx.162.141.1.47484 > xxx.53.51.235.80: P 1:935(934)
> > ack 1 win 92 <nop,nop,timestamp 8804947 709854070>
> > 17:04:40.995133 IP bad-len 0
> > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> >
> > I see quite a lot of this messages on my web server xxx.53.51.235 and
> > the connection is a bit sluggish sometimes.
> > It's a em card on 7.0-RC1 GENERIC amd64 kernel:
> >
> > em0_at_pci0:6:0:0: class=0x020000 card=0x109a15d9 chip=0x109a8086
> > rev=0x00 hdr=0x00
> >     vendor     = 'Intel Corporation'
> >     device     = '82573L Intel PRO/1000 PL Network Adaptor'
> >     class      = network
> >     subclass   = ethernet
> >
> > dev.em.0.%desc: Intel(R) PRO/1000 Network Connection Version - 6.7.3
> > dev.em.0.%driver: em
> > dev.em.0.%location: slot=0 function=0 handle=\_SB_.PCI0.EXP5.PXS5
> > dev.em.0.%pnpinfo: vendor=0x8086 device=0x109a subvendor=0x15d9
> > subdevice=0x109a class=0x020000
> > dev.em.0.%parent: pci6
> > dev.em.0.debug: -1
> > dev.em.0.stats: -1
> > dev.em.0.rx_int_delay: 0
> > dev.em.0.tx_int_delay: 66
> > dev.em.0.rx_abs_int_delay: 66
> > dev.em.0.tx_abs_int_delay: 66
> > dev.em.0.rx_processing_limit: 100
> > dev.sc.0.%desc: System console



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- Best regards, Nikolay Pavlov. <<<-----------------------------------    
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