In The actual Fedora 42 1.8.0.0 version, ipv6-join-group does nothing. This is fixed in 1.8.0.3 upstream and works. Reproducible: Always Steps to Reproduce: 1.socat -dddd UDP6-RECVFROM:51820,ipv6-join-group=[ff02::102]:bridge0,fork EXEC:hostname 2.Expect ff02:102 in "ip -6 maddr show" 3. Actual Results: Nothing, the -dddd option shows that ipv6-join-group is interpreted but does nothing. Expected Results: With 1.8.0.3: ip -6 maddr | grep -B 1 ff02::102 5: bridge0 inet6 ff02::102 Also MLD is seen with wireshark and multicast works. Building in F41 and F42 is no problem, only some tests fail Failed tests in 1.8.0.3 Fedora 41: FAILED: 219 304 453 492 504 590 591 592 593 Remarkable is: test 216 UDP6MULTICAST_UNIDIR: UDP/IPv6 multicast... IPv6 multicasting does not work but in this test the interface where the multicast should go to is not specified, which is as far I know required. Adding interface removes the problem.
diff test.sh test1.sh 8758c8758 < elif ! echo |$SOCAT -u -t 0.1 - UDP6-SENDTO:[ff02::1]:12002 >/dev/null 2>&1; then --- > elif ! echo |$SOCAT -u -t 0.1 - UDP6-SENDTO:[ff02::1]:12002,so-bindtodevice=$MCINTERFACE >/dev/null 2>&1; then 8771c8771 < CMD2="$TRACE $SOCAT -u $opts - UDP6-SENDTO:[ff02::2]:$ts1p" --- > CMD2="$TRACE $SOCAT -u $opts - UDP6-SENDTO:[ff02::2]:$ts1p,so-bindtodevice=$if1" Changed into test1.sh, and after opening port in firewall: test 216 UDP6MULTICAST_UNIDIR: UDP/IPv6 multicast... OK
FEDORA-2025-0d54679581 (socat-1.8.0.3-1.fc43) has been submitted as an update to Fedora 43. https://bodhi.fedoraproject.org/updates/FEDORA-2025-0d54679581
FEDORA-2025-0d54679581 (socat-1.8.0.3-1.fc43) has been pushed to the Fedora 43 stable repository. If problem still persists, please make note of it in this bug report.
FEDORA-2025-33885cfff8 (socat-1.8.0.3-1.fc42) has been submitted as an update to Fedora 42. https://bodhi.fedoraproject.org/updates/FEDORA-2025-33885cfff8
FEDORA-2025-4f0d6d3522 (socat-1.8.0.3-1.fc41) has been submitted as an update to Fedora 41. https://bodhi.fedoraproject.org/updates/FEDORA-2025-4f0d6d3522
FEDORA-2025-33885cfff8 has been pushed to the Fedora 42 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2025-33885cfff8` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2025-33885cfff8 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2025-4f0d6d3522 has been pushed to the Fedora 41 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2025-4f0d6d3522` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2025-4f0d6d3522 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2025-33885cfff8 (socat-1.8.0.3-1.fc42) has been pushed to the Fedora 42 stable repository. If problem still persists, please make note of it in this bug report.
FEDORA-2025-4f0d6d3522 (socat-1.8.0.3-1.fc41) has been pushed to the Fedora 41 stable repository. If problem still persists, please make note of it in this bug report.