[PolicyRecordingBot] No such host is known

Describe the issue
I follow PolicyRecordingBot tutorial to deploy and test sample. After deploy to Azure worker throw error with text
Recovering role... Unhandled Exception: No such host is known at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at Sample.PolicyRecordingBot.WorkerRole.AzureConfiguration.GetInstancePublicIpAddress(String publicFqdn) in D:\microsoft-samples1\Samples\V1.0Samples\LocalMediaSamples\PolicyRecordingBot\WorkerRole\AzureConfiguration.cs:line 380
Code Snippet
i understand that next one instruction cause error
string instanceHostName = DomainNameLabel + "." + instanceNumber + "." + publicFqdn; IPAddress[] instanceAddresses = Dns.GetHostEntry(instanceHostName).AddressList;

for my case value of instanceHostName is pip.1.my.domain.cl

is it problem in code or with DNS?

Start with WorkerRole\AzureConfiguration.cs at line 380 and review the PolicyRecordingBot deployment tutorial and the construction of instanceHostName. Reproduce the Azure worker deployment, then determine whether pip.1.my.domain.cl resolves; done means the sample either resolves the configured hostname or documents the required DNS or configuration correction.