Fragmentation on UDP layer possible?

Jason A. Donenfeld Jason at zx2c4.com
Mon Aug 13 08:40:59 CEST 2018


WireGuard's socket.c calls udp_tunnel_xmit with the DF bit set to 0,
which means if the underlying endpoint's path has an MTU that is too
small, the UDP packet will simply be fragmented, not dropped.


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