Dropping packets??

Mark Street jet at sonic.net
Mon Feb 4 10:23:15 PST 2002


My thought is that the virtual interface eth0:0 could be confusing your 
router, since the problem takes some time to manifest.  I believe Linux 
keeps track of MAC addresses tied to IP addresses, if the router gets a 
request from an IP it does not recognize it may become confused.

I forgot what type of router you were using.....  you might want to see 
what data you can extract from it also.

What does;   arp -a YOURHOSTNAME   and route -n  say?

Is there really a need for the virtual interface????

Mark

At 01:52 AM 2/4/2002 -0800, Christopher Wagner wrote:

>eth0      Link encap:Ethernet  HWaddr 00:A0:24:45:69:3C
>           inet addr:63.113.184.226  Bcast:63.113.184.255
>Mask:255.255.255.224
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:649492 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:625117 errors:0 dropped:0 overruns:0 carrier:1
>           collisions:1934 txqueuelen:100
>           RX bytes:116836716 (111.4 Mb)  TX bytes:108847427 (103.8 Mb)
>           Interrupt:5 Base address:0x220
>
>eth0:0    Link encap:Ethernet  HWaddr 00:A0:24:45:69:3C
>           inet addr:63.113.184.227  Bcast:63.113.184.255
>Mask:255.255.255.224
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           Interrupt:5 Base address:0x220
>
>lo        Link encap:Local Loopback
>           inet addr:127.0.0.1  Mask:255.0.0.0
>           UP LOOPBACK RUNNING  MTU:16436  Metric:1
>           RX packets:2544628 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:2544628 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:113526543 (108.2 Mb)  TX bytes:113526543 (108.2 Mb)
>
>--
>That is an awfully strange replication..  It does it from Sonic.net, too..
>So there is some kind of misconfiguration on either my box or my Netopia
>router..  Although I followed their instructions for configuring the
>router..  Weird.
>
>- Christopher Wagner
>chrisw at pacaids.com
>
>Packaging Aids Corporation - Information Systems
>P.O. Box 9144
>San Rafael, CA 94912-9144
>http://www.pacaids.com/
>(415) 454-4868 x116
>
>
>-----Original Message-----
>From: Christopher White [mailto:cwhite at softquad.com]
>Sent: Friday, February 01, 2002 6:00 PM
>To: 'talk at nblug.org'
>Subject: RE: Dropping packets??
>
>
>You've got a strange duplication at the end of this traceroute:
>
>tophat:~# traceroute 63.113.184.226
>traceroute to 63.113.184.226 (63.113.184.226), 30 hops max, 38 byte packets
>  1  atg-router (216.210.204.209)  0.779 ms  0.725 ms  0.613 ms
>  2  64-42-94-1.atgi.net (64.42.94.1)  17.130 ms  15.618 ms  17.047 ms
>  3  gig00.cr1.snrsca16.atgi.net (206.58.248.71)  17.706 ms  17.599 ms
>17.234 ms
>  4  atm401.cr1.snrfca15.atgi.net (64.42.101.5)  18.146 ms
>atm401.cr1.cncrca14.atgi.net (216.210.139.2)  18.468 ms
>atm401.cr1.snrfca15.atgi.net (64.42.101.5)  107.854 ms
>  5  Serial3-9.GW9.PAO1.ALTER.NET (157.130.212.113)  20.700 ms  20.546 ms
>se11.cr1.paixpa.atgi.net (64.42.101.58)  21.530 ms
>  6  Serial3-9.GW9.PAO1.ALTER.NET (157.130.212.113)  21.370 ms  21.088 ms
>20.689 ms
>  7  136.ATM3-0.XR1.PAO1.ALTER.NET (152.63.52.194)  22.421 ms  21.353 ms
>22.142 ms
>  8  189.at-3-0-0.HR1.PAO1.ALTER.NET (152.63.54.193)  20.896 ms  20.743 ms
>26.401 ms
>  9  324.ATM2-0.VR1.PAO1.ALTER.NET (152.63.54.249)  25.629 ms  37.328 ms
>32.634 ms
>10  63.113.184.226 (63.113.184.226)  40.726 ms  40.008 ms  40.901 ms
>11  63.113.184.226 (63.113.184.226)  41.952 ms  261.623 ms  42.909 ms
>
>Perhaps there is some misconfiguration on your box.  Can you do an ifconfig
>and paste it into a message?
>
>Anyone else know anything about this?
>
>
>
>---
>
>Checked by AVG anti-virus system (http://www.grisoft.com).
>Version: 6.0.320 / Virus Database: 179 - Release Date: 1/30/2002



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