google / gvisor

Application Kernel for Containers

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Allow fragmentation (and reassembly) for loopback traffic.

arthurpi opened this issue · comments

Description

Right now, in gVisor, when sending an IP packet on loopback device, we shortcut the fragmentation code. This is incorrect because loopback device do have an MTU. (which does not have to be 64k, so fragmentation may be required).

Steps to reproduce

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runsc version

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docker version (if using docker)

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uname

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kubectl (if using Kubernetes)

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repo state (if built from source)

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runsc debug logs (if available)

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This issue has been closed due to lack of activity.