Hello all, I am experiencing a problem with IP fragmentation.
I am receiving an udp packet that is larger than the MTU and it is fragmented along the network.
I am receiving the two fragments but they are not being reassembled correclty.
The MTU of the system is 1500 and I cannot increase it, because I am getting this error: SIOCSIFMTU: Numerical result out of range.
Is it necessary to build the kernel with support for jumbo frames?
There's any option that should be enabled on the kernel (220.127.116.11) to support this feature? Shouldn't this be a default feature?
Any hint that may assist in debugging this issue is welcome.
The first packet it is considered (bad) as a complete packet and I am getting an error at the app level.
The second packet is the last part of the fragment which should be ignored completely:
As reference I am sending the same packet to my laptop which is implementing correctly the fragmentation re-assembly: