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[docker] Allow setting MTU at container startup ($SET_MTU) #3

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msune opened this issue Sep 27, 2024 · 0 comments
Open

[docker] Allow setting MTU at container startup ($SET_MTU) #3

msune opened this issue Sep 27, 2024 · 0 comments
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docker Docker container feature

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@msune
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msune commented Sep 27, 2024 •
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Add an environment variable $SET_MTU=<val> that would set/adjust $IFACES MTU according to val:

  • "auto": based on the funneling (only) rules, reduce the MTU of $IFACES by either 20 bytes (TCP) or 8 bytes (UDP).
  • numeric_value: fix the MTU to a particular numeric value. Value should be in the range of 64-9216.
  • "": do nothing

A reasonable default should be picked, probably auto (?). In either of the cases the entrypoint.sh should log as INFO the detected MTU (important for debugging).

This issue includes CI coverage.
@msune msune added feature docker Docker container labels Sep 27, 2024
@msune msune changed the title [docker] $SET_MTU to $IFACES at container startup [docker] $SET_MTU at container startup Sep 27, 2024
@msune msune mentioned this issue Oct 7, 2024
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@msune msune changed the title [docker] $SET_MTU at container startup [docker] Allow setting MTU at container startup ($SET_MTU) Oct 7, 2024
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