Exclude Robots functionality issues

As for now, there are three known issues related to the Exclude Robots functionality.

149102 - IP ranges in Exclude Robots don't support IPv6

This means that if you add an IPv4 range to the Sitecore.Analytics.ExcludeRobots.config file:

<excludedIPAddresses>
  127.0.0.1 - 128.0.0.1
</excludedIPAddresses>

and then visit a site with an IPv6 IP address, you will face the following exception:

[InvalidOperationException: rangeBegin.AddressFamily != address.AddressFamily]
   Sitecore.Web.IPAddresses.IPRange.Contains(IPAddress address) +262
   Sitecore.Web.IPAddresses.IPList.Contains(IPAddress address) +381
   Sitecore.Analytics.Configuration.ExcludeList.ContainsIpAddress(String addressString) +99
   Sitecore.Analytics.Pipelines.ExcludeRobots.CheckIpAddress.Process(ExcludeRobotsArgs args) +202
   (Object , Object[] ) +83
   Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args) +365
   Sitecore.Analytics.DefaultTracker.ExcludeRequest() +28
   Sitecore.Analytics.DefaultTracker.StartTracking() +267
   Sitecore.Analytics.Pipelines.StartAnalytics.StartTracking.Process(PipelineArgs args) +95
   (Object , Object[] ) +83
   Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args) +365
  Sitecore.Mvc.Analytics.Pipelines.MvcEvents.RequestBegin.StartTracking.Process(RequestBeginArgs

The same behavior, if you specify an IPv6 range and then visit a site with a usual IPv4 address.

150102 - Sometimes IP ranges identify the occurrence of IP not correctly

There is a known issue in the method which should determine whether an IP address belongs to the IP range. For example, if you specify the 127.0.0.1 - 128.0.0.1 range, the 127.0.0.10 IP address will be considered as a not belonging one.

149113 (379609) - Exclude Robots does not take the Analytics.ForwardedRequestHttpHeader setting into account

There is a knowledge base article regarding this issue - https://kb.sitecore.net/articles/454115

FIX

The patch which fixes all the three issues can be found - https://github.com/SitecoreSupport/Sitecore.Support.149113.149102.150102