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May 2023

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IPv6 UDP not working
by Juan Orti 29 May '23

29 May '23

Hi, I'm testing a DNS server in a rootless container using pasta, and I have seen that the IPv6 UDP packets are not reaching the service: $ dig www.google.com @fddc:f797:78ef:70::5 +short ;; communications error to fddc:f797:78ef:70::5#53: timed out ;; communications error to fddc:f797:78ef:70::5#53: timed out ;; communications error to fddc:f797:78ef:70::5#53: timed out ; <<>> DiG 9.18.15 <<>> www.google.com @fddc:f797:78ef:70::5 +short ;; global options: +cmd ;; no servers could be reached TCP over IPv6 and UDP, TCP over IPv4 works fine: $ dig www.google.com @fddc:f797:78ef:70::5 +short +tcp 216.239.38.120 $ dig www.google.com @192.168.7.5 +short 216.239.38.120 $ dig www.google.com @192.168.7.5 +short +tcp216.239.38.120 The pasta process is running with these arguments: /usr/bin/pasta --config-net -u 53-53:53-53 -t 53-53:53-53 -t 3003-3003:3003-3003 -T none -U none --no-map-gw --netns /run/user/1002/netns/netns-378b62b8-bf27-3b51-1fb1-e2ebb7119647 I'm using passt-0^20230509.g96f8d55-1.fc38.x86_64 from Fedora CoreOS 38. Is this a known bug? or am I doing something wrong? Thank you.

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passt: new version 2023_05_09.96f8d55 available
by Stefano Brivio 10 May '23

10 May '23

The new version with tag 2023_05_09.96f8d55 includes the following changes: 96f8d55 correct -6 option in manpage 940bd3e passt: Fix error check for signal(), improve error messages 1a3ade9 nstool: Enter holder's cwd when changing mount ns with nstool exec 98031be nstool: Advertise the holder's cwd (in its mountns) across the socket 469b69a test: Use "nstool exec" to slightly simplify tests 3372cd0 test: Initialise ${TRACE} properly 329149d nstool: Add --keep-caps option to nstool exec 0b66944 nstool: Add nstool exec command to execute commands in an nstool namespace 3bcbca5 nstool: Helpers to iterate through namespace types f6a9ea3 nstool: Add magic number to advertized information 4311066 nstool: Detect what namespaces target is in fd4a752 nstool: Replace "pid" subcommand with "info" subcommand a4b017d nstool: Split some command line parsing and socket setup to subcommands 42fb218 nstool: Move description of its operation modes from comment to usage 2884ccd nstool: Reverse parameters to nstool 4914fce nstool: Rename nsholder to nstool 55bbe3d test: Remove race between commands run in the same context ca2749e passt: Relicense to GPL 2.0, or any later version https://passt.top/passt/log/?qt=range&q=2023_03_29.b10b983..2023_05_09.96f8… Note that this is the first GPLv2+ version of passt, changing from AGPLv3+. Packages: - Arch Linux AUR: https://aur.archlinux.org/packages/passt - Debian tracker: https://tracker.debian.org/pkg/passt - Copr (CentOS Stream, EPEL, Fedora, Mageia, openSUSE): https://copr.fedorainfracloud.org/coprs/sbrivio/passt/build/5906538/ permanent mirror: https://passt.top/builds/copr/0^20230509.g96f8d55/ - Fedora updates: https://bodhi.fedoraproject.org/updates/?packages=passt - Ubuntu tracker: https://packages.ubuntu.com/lunar/passt - Void Linux: https://voidlinux.org/packages/?q=passt - Static builds: - Package for other RPM-based distributions, x86_64 only: https://passt.top/builds/latest/x86_64/passt-g96f8d55-1.x86_64.rpm - x86_64 static binaries: https://passt.top/builds/latest/x86_64/ - Debian package, from x86_64 static build: https://passt.top/builds/latest/x86_64/passt_96f8d55-1_all.deb -- Stefano

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