Can't find any client to gup http lines in debug log

HI

I am troubleshooting some clients which are not updating from the gup, here's what's happening:

1. I can't find any usual lines like <GetLUFileRequest:>

      2.When I search for the port 2967 all i get is this:

2016/09/21 16:37:05.218 [7380:5228] GUProxy - MasterClientBypassTime [-1], MasterClientThreadCount [10], MasterClientMaxDiskCache [500], MasterClientDeleteUnusedContentsTime [1728000], MasterClientThrottling [512], ClientThrottling [-1], MasterClientPort [2967], Enable Pre-defined GUP [1], Enable Dynamic GUP [0], Enable Explicit GUP mappings [0]

     3. I can telnet to the gup on port 2967 fine.

     4. The gup has enough space upto 2000MB set for the content files

Yet clients have not updated and their definitions are at sep 16.

How can i debug this further and what should i look for?

Appreciate all the help

Regards