Dear Bastian, Thank you for the patch! For an unknown reason, I didn't get an e-mail corresponding to your message #10. I checked bugs.debian.org/1132940 out of curiosity manually today and saw your message only now. Today, I upgraded the package to 0.18.5.0+~0+20260428-1, and the error did not occur today yet. The last four such errors happened before the upgrade and quite rarely: 2026-04-26 08:59:10.073 [P2P0] ERROR net.p2p.tx src/cryptonote_protocol/levin_notify.cpp:575 Unable to send transaction(s) via Dandelion++ stem 2026-04-28 05:12:02.797 [P2P8] ERROR net.p2p.tx src/cryptonote_protocol/levin_notify.cpp:575 Unable to send transaction(s) via Dandelion++ stem 2026-06-15 11:44:15.028 [P2P6] ERROR net.p2p.tx src/cryptonote_protocol/levin_notify.cpp:575 Unable to send transaction(s) via Dandelion++ stem 2026-06-19 10:02:41.344 [P2P3] ERROR net.p2p.tx src/cryptonote_protocol/levin_notify.cpp:575 Unable to send transaction(s) via Dandelion++ stem I checked out the code and applied your patch locally, but now I start running into all kinds of issues during build. For example, though I have cmake 3.31.6, `make` outputs pages of warnings, the earliest of which is this: CMake Deprecation Warning at external/randomx/CMakeLists.txt:29 (cmake_minimum_required): Compatibility with CMake < 3.10 will be removed from a future version of CMake. Update the VERSION argument value. Or, use the ... syntax to tell CMake that the project requires at least but has been updated to work with policies introduced by or earlier. My machine does not have a development environment suitable for proper code development, and I don't have any insight into the warnings. So even if the compilation ever succeeds (it takes long), and even if I succeed to start the compiled monerod, I'm unsure how useful my feedback would be; my apologies. Probably unrelated, but still better to mention this. Upon issuing `systemctl --user restart monerod` or `systemctl --user stop monerod` (with monerod from the Debian package 0.18.5.0+~0+20260428-1), I get this into the log: 2026-06-20 22:17:56.483 [SRV_MAIN] INFO global src/daemon/p2p.h:81 p2p net loop stopped 2026-06-20 22:17:56.492 7f37852f96c0 INFO stacktrace src/common/stack_trace.cpp:134 Exception: std::system_error 2026-06-20 22:17:56.492 7f37852f96c0 INFO stacktrace src/common/stack_trace.cpp:135 Unwound call stack: 2026-06-20 22:17:56.492 7f37852f96c0 INFO stacktrace src/common/stack_trace.cpp:173 [1] 0xab) [0x555dede82aa6]:__cxa_throw+0xab) [0x555dede82aa6] 2026-06-20 22:17:56.492 7f37852f96c0 INFO stacktrace src/common/stack_trace.cpp:173 [2] /usr/bin/monerod(+0xbd701) [0x555dede7d701] 2026-06-20 22:17:56.492 7f37852f96c0 INFO stacktrace src/common/stack_trace.cpp:173 [3] /usr/bin/monerod(+0x73bfa9) [0x555dee4fbfa9] 2026-06-20 22:17:56.492 7f37852f96c0 INFO stacktrace src/common/stack_trace.cpp:173 [4] 0xbc97) [0x7f54092ebc97]:_64-linux-gnu/libboost_thread.so.1.90.0(+0xbc97) [0x7f54092ebc97] 2026-06-20 22:17:56.492 7f37852f96c0 INFO stacktrace src/common/stack_trace.cpp:173 [5] 0x92b7b) [0x7f540869eb7b]:_64-linux-gnu/libc.so.6(+0x92b7b) [0x7f540869eb7b] 2026-06-20 22:17:56.492 7f37852f96c0 INFO stacktrace src/common/stack_trace.cpp:173 [6] 0x1107f8) [0x7f540871c7f8]:_64-linux-gnu/libc.so.6(+0x1107f8) [0x7f540871c7f8] 2026-06-20 22:17:56.492 7f37852f96c0 INFO stacktrace src/common/stack_trace.cpp:173 A stacktrace is probably not something we should expect during normal operation, should we? As a rule of thumb, an exit should be graceful; upon exit, a program should free its resources itself properly. Gratefully, Albert

