mirror of
https://github.com/fergalmoran/ladybird.git
synced 2025-12-29 21:00:06 +00:00
743a9e9ebf
The networking subsystem currently assumes all adapters are Ethernet adapters, including the LoopbackAdapter, so all packets are pre-pended with an Ethernet Frame header. Since the MTU must not include any overhead added by the data-link (Ethernet in this case) or physical layers, we need to subtract it from the MTU. This fixes a kernel panic which occurs when sending a packet that is at least 65523 bytes long through the loopback adapter, which results in the kernel "receiving" a packet which is larger than the support MTU out the other end. (As the actual final size was increased by the addition of the ethernet frame header)