tcpdump Mailing List

Covers the classic tcpdump text-based network sniffer and its libpcap sniffer library component.

List Archives

Latest Posts

activities report for June 2026 Denis Ovsienko (Jul 03)
June 2026
=========

The accounted activities in June 2026 stand for 36:15 working hours and
13 commits (10 in tcpdump-htdocs, 2 in tcpdump and 1 in libpcap). Main
directions of this work were:
* initial follow-ups to the shutdown of Cirrus CI,
* progressing of a few bug reports and pull requests,
* progressing of various unfinished prototypes,
* upgrading of various Debian hosts from 12 to 13, and
* other infrastructure upkeep work....

Re: UNALIGNED_MEMCPY enh via tcpdump-workers (Jun 10)

Re: UNALIGNED_MEMCPY Denis Ovsienko (Jun 10)
On Raspberry Pi 0 (armv6l):

# echo 1 >/proc/cpu/alignment

kernel: alignment: ignoring faults is unsafe on this CPU. Defaulting to
fixup mode.

# cat /proc/cpu/alignment
User: 0
System: 0 (0x0)
Skipped: 0
Half: 0
Word: 0
DWord: 0
Multi: 0
User faults: 3 (fixup+warn)

Yet setting this to 4 (signal) and running a test program that triggers
a signal on SPARC neither triggers the...

Request for feedback on issue 1446 Francois via tcpdump-workers (Jun 07)

activities report for May 2026 Denis Ovsienko (Jun 03)
May 2026
========

The accounted activities in May stand for 34:10 working hours and 5
commits (3 in libpcap and 2 in tcpdump-htdocs). The accounted
activities include:
* progressing of bug reports and pull requests,
* progressing of various unfinished prototypes, and
* various infrastructure upkeep work, including a few OS upgrade
attempts, some of which worked out well and some did not....

Re: serving git:// from git.tcpdump.org Denis Ovsienko (May 22)
Following the absence of objections, git:// has been shut down today to
simplify future upgrades.

Re: UNALIGNED_MEMCPY enh via tcpdump-workers (May 14)

Re: UNALIGNED_MEMCPY Guy Harris (May 13)
Yes, the point was to keep the compiler from "helpfully" seeing through the wrapper and "helpfully" assuming alignment.

Then the right thing to do is to switch to a check for the processors that *don't* handle unaligned loads, which would
be the 68000, the 68010/68012, and SPARC.

I'm not sure about 32-bit Arm, though. It may be that the 32-bit Arm platforms that matter do handle unaligned loads.
(No need to worry...

UNALIGNED_MEMCPY enh via tcpdump-workers (May 13)

activities report for April 2026 Denis Ovsienko (May 13)
April 2026
==========
The accounted activities in April stand for 88:50 working hours and 10
commits (9 in libpcap and 1 in tcpdump-htdocs). This work mostly
concerns prototyping of bug fixes that still require more time to
become ready for merging, and to a lesser extent various infrastructure
upkeep work.
----------------------------------------------------------------------

Re: Request for new link-layer type: LINKTYPE_DECT_NR_TAP (DLT_DECT_NR_TAP = 304) Edem Khadiev via tcpdump-workers (May 04)

Request for new link-layer type: LINKTYPE_DECT_NR_TAP (DLT_DECT_NR_TAP = 304) Edem Khadiev via tcpdump-workers (Apr 28)

activities report for March 2026 Denis Ovsienko (Apr 02)
March 2026
==========

The accounted activities in March stand for 123:25 working hours and 22
commits (13 in libpcap, 5 in tcpdump and 4 in tcpdump-htdocs).

Two main directions of this work were progressing of the pull request
queues and prototyping of a few bug fixes that still require more work
to become ready for merging.

Other accounted activities include:

* various infrastructure upkeep work,
* various minor improvements to QNX support...

More Lists

Dozens of other network security lists are archived at SecLists.Org.