<div dir="ltr">Hello,<div><br></div><div>I was testing this feature the other day but unsure if it's doing the right thing.</div><div>Nginx is generating 65k UDP datagrams which are then being fragmented at the IP layer. </div><div>Reading the spec, rfc9000, it looks like IP fragmentation is not allowed (Section 14).</div><div><br></div><div>"<span style="color:rgb(0,0,0);font-size:13.3333px">UDP datagrams MUST NOT be fragmented at the IP layer. In IPv4</span></div><pre style="font-size:13.3333px;margin-top:0px;margin-bottom:0px;color:rgb(0,0,0)"><a href="https://datatracker.ietf.org/doc/html/rfc9000#ref-IPv4" title=""Internet Protocol"">IPv4</a>], the Don't Fragment (DF) bit MUST be set if possible, to
prevent fragmentation on the path."</pre><pre style="font-size:13.3333px;margin-top:0px;margin-bottom:0px;color:rgb(0,0,0)"><br></pre><pre style="font-size:13.3333px;margin-top:0px;margin-bottom:0px;color:rgb(0,0,0)"><font face="arial, sans-serif">Also, it doesn't seem to be respecting the client's endpoint max_udp_payload_size.</font></pre><pre style="font-size:13.3333px;margin-top:0px;margin-bottom:0px;color:rgb(0,0,0)"><font face="arial, sans-serif"><br></font></pre><pre style="font-size:13.3333px;margin-top:0px;margin-bottom:0px;color:rgb(0,0,0)"><font face="arial, sans-serif">Can you please confirm if this is desired ?</font></pre><pre style="font-size:13.3333px;margin-top:0px;margin-bottom:0px;color:rgb(0,0,0)"><font face="arial, sans-serif"><br></font></pre><pre style="font-size:13.3333px;margin-top:0px;margin-bottom:0px;color:rgb(0,0,0)"><font face="arial, sans-serif">R,</font></pre><pre style="font-size:13.3333px;margin-top:0px;margin-bottom:0px;color:rgb(0,0,0)"><font face="arial, sans-serif">Lucas.</font></pre></div>