Thanks for your appreciated replies!

I do not think this is a firewall issue because when using dig command I get no issues. Tried with two different sets of options:

• dig +bufsize=512 : got Truncated, retrying in TCP mode then a correct reply received through TCP
• or simple dig : in that case I directly get the answer through UDP

But of course it does not work when disallowing TCP retry mode and setting a 512 bytes buffer size
(dig +bufsize=512 +ignore)

Tests show clearly now a limit based on packet size (512 bytes) but I still do not know where it comes from precisely.
Will investigate deeper when I will have some time.

—
You are receiving this because you are subscribed to this thread.
Reply to this email directly, view it on GitHub, or unsubscribe.