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Editorial Team
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Asked: 2026-06-09T20:13:29+00:00

There is a certain ubuntu 10.04 server where if I ssh a file onto

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There is a certain ubuntu 10.04 server where if I ssh a file onto it from any server that is outside the office where this server is (meaning any of use scp-ing onto this server through LAN from within this server always works for some reason), then scp-ing fails for any file over 2112 kB in size, and is stuck at 2112 kB.
So

scp -vvv /home/attila-szeremi/aszeremi.tar.gz  attila@server.hu:~/aszeremi.tar.gz

shows something like 1% 2112KB 909.2KB/s - stalled - dynamically at the end, where the KB/s becomes lower and lower.

Does anyone know what may be causing this and how I can fix it?

What I have tried so far:

  • Limiting the speed with scp -l 2000. It just made the file sending slower, and at 2112 kB it got stuck again.
  • Enabling compresison with -C. It was still stalled at the same size.
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1 Answer

  1. Editorial Team

    I seemed to have found the fix. I had to set the LAN card’s mtu setting to 1492 by:

    # ifconfig eth0 mtu 1492
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