yahoo-eng-team team mailing list archive

[Ed Bak <ed.bak2@xxxxxx>]

Public bug reported:

Instances appear to be pingable for a short time after a floating ip is
associated even though there is no ingress icmp security group rule.
tcpdump of the instance's tap device shows that the instance isn't
actually responding to the ping.  It appears that the router gateway
interface is responding to the ping for a short time.  You can reproduce
this by booting an instance using a security group with only egress
rules.  Allocate a floating ip address. ping the ip address ( nothing
will happen yet ).  Associate the ip with the instance.  The ping will
begin responding.

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1260530

Title:
  Instances appear pingable without an ingress icmp security rule

Status in OpenStack Neutron (virtual network service):
  New

Bug description:
  Instances appear to be pingable for a short time after a floating ip
  is associated even though there is no ingress icmp security group
  rule.  tcpdump of the instance's tap device shows that the instance
  isn't actually responding to the ping.  It appears that the router
  gateway interface is responding to the ping for a short time.  You can
  reproduce this by booting an instance using a security group with only
  egress rules.  Allocate a floating ip address. ping the ip address (
  nothing will happen yet ).  Associate the ip with the instance.  The
  ping will begin responding.

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