[sr-dev] [tracker] Task opened: Dispatcher Round Robin Logic not Working with Dispatcher Table with FQDNs

THIS IS AN AUTOMATED MESSAGE, DO NOT REPLY. A new Flyspray task has been opened. Details are below. User who did this - Ed James (erj01) Attached to Project - sip-router Summary - Dispatcher Round Robin Logic not Working with Dispatcher Table with FQDNs Task Type - Bug Report Category - Core Status - Unconfirmed Assigned To - Operating System - Linux Severity - High Priority - Normal Reported Version - 4.0 Due in Version - Undecided Due Date - Undecided Details - I'm using the dispatcher module (Linux Kamailio v4.0 server) to load balance between two media servers and have two records in the dispatcher table as follows: id, setid, destination, flags, priority, description 50, 40, sip:192.168.2.111:5066;transport=tcp, 0, 0, SomeDescription 51, 40, sip:10.1.0.119:5060, 0, 0, SomeDescription If I call ds_select_dst("40", "4") then it works perfectly and calls are sent alternately to 10.1.0.119 and 192.168.2.111 - that's all OK. The issue arises when I use the FQDNs for these two machines in the dispatcher records so I've got: id, setid, destination, flags, priority, description 50, 41, sip:LYNCMESLOADBAL1.RedwoodLync.com:5066;transport=tcp, 0, 0, SomeDescription 51, 41, sip:LYNCMESLOADBAL2.RedwoodLync.com:5060, 0, 0, SomeDescription I've then got Host(A) records on the DNS server (192.168.2.1) as follows: LYNCMESLOADBAL1.RedwoodLync.com --> 192.168.2.111 LYNCMESLOADBAL2.RedwoodLync.com --> 10.1.0.119 On the Linux box System-->Admin-->Network-->Network Configuration-->DNS I've got Primary DNS as 192.168.2.1. If I do nslookup on either of the FQDNs they work fine do I think the DNS is working. If I call ds_select_dst("41", "4") then it sends the first call to 10.1.0.119 and then all subsequent calls to 192.168.2.111 and doesn't round robin between the two records. So the issue is that the round robin doesn't seem to work when the dispatcher table contains FQDNs for machines for which DNS lookup does work and for which round robin does work with ip addresses. I've tried the following to switch off any dns caching but still have the issue: use_dns_cache=off dns_cache_init=off Anyone seen this before or have any suggestions ? Thanks in advance for your help - much appreciated. More information can be found at the following URL: http://sip-router.org/tracker/index.php?do=details&task_id=459 You are receiving this message because you have requested it from the Flyspray bugtracking system. If you did not expect this message or don't want to receive mails in future, you can change your notification settings at the URL shown above.