From what I understand you are looking at a TCP socket – one of the nodes didn't get acknowledge for a segment so now you are observing retransmission.
If you provide the entire packet capture – maybe we can give more information about the possible RCA.
Thanks in advance,
Hi, I've some problem to send medium (about 2 o 3 pages of html) emails
to the smtp server of gmail and now the same problem to post a message
to a forum. So I sniffed my traffic and I found the following error:
[This frame is a (suspected) retrasmission]
What's means ?
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