On Sep 4, 2021, at 4:03 PM, Dr Jean-Michel Collard <jm@xxxxxxxxxxxxxxxx> wrote:
> I have another simple question and afterwards I stop posting :
Questions should be sent to the mailing list, or asked on
https://ask.wireshark.org/
rather than sent to individuals.
> Why does Wireshark display Ipv4/v6 addresses instead of hostnames?
There can be several reasons, but one reason could be that Wireshark's "resolve host names" option is turned off.
> Maybe it can be changed but I don't know where.
Select "Name Resolution" from the View menu, and make sure that "Resolve Network Addresses" has a checkmark next to it. If it doesn't, select it, to turn it on.