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[Xen-bugs] [Bug 596] New: ARP cache problems / slow connect times in rou

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Subject: [Xen-bugs] [Bug 596] New: ARP cache problems / slow connect times in routed mode
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Date: Fri, 31 Mar 2006 20:36:46 +0000
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           Summary: ARP cache problems / slow connect times in routed mode
           Product: Xen
           Version: 3.0-testing
          Platform: All
        OS/Version: Linux-2.6
            Status: NEW
          Severity: major
          Priority: P3
         Component: Guest-OS
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: matta@xxxxxxxxxxxx

A user of mine has debugged this issue for me.  It seems a Xen guest in routed
mode wants to arp cache any host it connects to with the MAC address
FE:FF:FF:FF:FF:FF.  The user also identified long connection times due to this.
 While a remote host is in the arp cache connection times are fast (30ms or so),
when it is not it can be well over 1000ms.  They have provided me the tcpdump
output that proves this.  They also proved it is due to the ARP cache by
statically adding a remote host to the ARP cache and noting that connection
times are very low. 

I will add the users debugging information as comments to this bug.

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