No Problem in 4.15.0-32 and before.
Problem since 4.15.0-33-generic with raw socket => EtherCAT/SOEM (Simple
Open Ethercat Master).
I can confirm it's fixed in 4.15.0-38-generic (SOEM ok).
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The fix for #1783110 discussed earlier was actually not included before
4.15.0-38
http://kernel.ubuntu.com/git/ubuntu/ubuntu-
bionic.git/commit/?id=de8aa589c0b015380e782fbbdc7f435cdf5eb334
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Fixed in 4.15.0-38.
http://kernel.ubuntu.com/git/ubuntu/ubuntu-bionic.git/commit/?id=de8aa589c0b015380e782fbbdc7f435cdf5eb334
** Changed in: linux (Ubuntu)
Status: Confirmed => Fix Released
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This is not reproducible on Ubuntu 18.04 with kernel 4.15.0-38-generic
nor on Ubuntu 18.10. Guess it was some kind of hickup around 4.15.0-33..
BR
/Fredrik
frol@ubuntu1810:/tmp$ sudo tcpdump -i lo -enlx
[sudo] lösenord för frol:
tcpdump: verbose output suppressed, use -v or -vv for full protoco
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1791893
Title:
Trailing garbage data when sending on an AF_PACKET socket
To manage
Right, it appears to be the same as #1783110. That issue was reported to
be fixed in 4.4.137 upstream. If it was fixed there, I wouldn't the fix
be included in 4.15.0-33-generic as well? Also note that I could not
reproduce it in 4.15.0-23-generic nor in 4.15.0-22-generic.
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apport information
** Tags added: apport-collected staging
** Description changed:
When sending an Ethernet frame on an packet socket (AF_PACKET,
SOCK_RAW), an additional 14 bytes of trailing data is sent on the
interface. The extra 14 bytes are present regardless of the packet size.
The
This looks a lot like #1783110
** Information type changed from Private Security to Public
** Information type changed from Public to Private Security
** Information type changed from Private Security to Public Security
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B
