# MTU mismatch

> A partner network uses a smaller packet size. Uploads larger than its MTU time out on the way in.

## What happens

A partner network uses a smaller packet size. Uploads larger than its MTU time out on the way in.

## How to prevent it

Clamp the packet size, or keep large uploads on one network.

## Facts

SEV2 MTU mismatch
- **First Era:** [Series A](https://wiki.playquorum.dev/eras/series-a.md)
- **Starts at:** SEV2
- **Escalates to:** SEV1
- **Lasts:** 1 min

## See also

- [Incidents](https://wiki.playquorum.dev/incidents.md)

Source: https://wiki.playquorum.dev/incidents/mtu