how to see linux OS in wireshark trace

[nicky D <ixexplorer () gmail com>]

hi Experts

i want to see the linux OS in the wireshark trace .
Which filter should be applieed to it .

i see Ubuntu when i say tcp contains "Ubuntu" infact this machine is redhat
linux .

i would like to see what messge i get on wireshark  while doing a discovery
with NMS .

thanks
explorer

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