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Test flake in integration_tests::mcast::test_multicast_vlan_translation_not_possible #107

@bnaecker

Description

@bnaecker

Seen on #106. Here is a link to the test run, and I've copied the details below:

2660    2025-08-29T00:12:12.188Z    ---- integration_tests::mcast::test_multicast_vlan_translation_not_possible stdout ----
2661    2025-08-29T00:12:12.188Z    unexpected packets:
2662    2025-08-29T00:12:12.188Z    port: 15: (EthHdr { eth_dmac: 33:33:00:00:00:01, eth_smac: a8:40:25:00:00:0a, eth_8021q: None, eth_type: 34525, eth_size: 0 })(Ipv6Hdr { ipv6_version: 6, ipv6_traffic_class: 0, ipv6_flow_label: 0, ipv6_payload_len: 62, ipv6_next_hdr: 17, ipv6_hop_lim: 254, ipv6_src_ip: ::, ipv6_dst_ip: ff05::1 })(UdpHdr { udp_sport: 6081, udp_dport: 6081, udp_len: 62, udp_sum: 16701 })(GeneveHdr { version: 0, opt_len: 1, control: false, critical: false, protocol: 25944, vni: 100, options: [1, 41, 0, 0] }) body: 56 bytes
2663    2025-08-29T00:12:12.189Z    0000: 3333 0000 0001 a840 2500 000a 86dd 6000 33....¨@%...<86>Ý`.
2664    2025-08-29T00:12:12.189Z    0010: 0000 003e 11fe 0000 0000 0000 0000 0000 ...>.þ..........
2665    2025-08-29T00:12:12.189Z    0020: 0000 0000 0000 ff05 0000 0000 0000 0000 ......ÿ.........
2666    2025-08-29T00:12:12.189Z    0030: 0000 0000 0001 17c1 17c1 003e 413d 0100 .......Á.Á.>A=..
2667    2025-08-29T00:12:12.189Z    0040: 6558 0000 6400 0129 0000 0100 5e00 0001 eX..d..)....^...
2668    2025-08-29T00:12:12.189Z    0050: 0000 0000 0000 0800 4500 001c 0000 4000 ........E.....@.
2669    2025-08-29T00:12:12.189Z    0060: ff11 d913 c0a8 0114 e000 0100 115c 15b3 ÿ.Ù.À¨..à....\.³
2670    2025-08-29T00:12:12.189Z    0070: 0008 3612 0000 0000 0000 0000 0000 0000 ..6.............
2671    2025-08-29T00:12:12.189Z    0080: 0000                                    ..
2672    2025-08-29T00:12:12.189Z    Error: Captured unexpected number of packets: 2 expected: 1, unexpected packets: 12673    2025-08-29T00:12:12.189Z
2674    2025-08-29T00:12:12.189Z    Stack backtrace:
2675    2025-08-29T00:12:12.189Z       0: anyhow::kind::Adhoc::new
2676    2025-08-29T00:12:12.189Z                 at /home/build/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
2677    2025-08-29T00:12:12.189Z       1: test_all::integration_tests::common::Switch::packet_test
2678    2025-08-29T00:12:12.189Z                 at ./tests/integration_tests/common.rs:789:22
2679    2025-08-29T00:12:12.189Z       2: test_all::integration_tests::mcast::test_multicast_vlan_translation_not_possible::{{closure}}
2680    2025-08-29T00:12:12.189Z                 at ./tests/integration_tests/mcast.rs:3846:18
2681    2025-08-29T00:12:12.189Z       3: <core::pin::Pin<P> as core::future::future::Future>::poll
2682    2025-08-29T00:12:12.189Z                 at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/core/src/future/future.rs:124:9
2683    2025-08-29T00:12:12.189Z       4: <core::pin::Pin<P> as core::future::future::Future>::poll
2684    2025-08-29T00:12:12.189Z                 at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/core/src/future/future.rs:124:9
2685    2025-08-29T00:12:12.189Z       5: tokio::runtime::scheduler::current_thread::CoreGuard::block_on::{{closure}}::{{closure}}::{{closure}}
2686    2025-08-29T00:12:12.189Z                 at /home/build/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.47.1/src/runtime/scheduler/current_thread/mod.rs:742:54
2687    2025-08-29T00:12:12.189Z       6: tokio::task::coop::with_budget
2688    2025-08-29T00:12:12.189Z                 at /home/build/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.47.1/src/task/coop/mod.rs:167:5
2689    2025-08-29T00:12:12.189Z       7: tokio::task::coop::budget
2690    2025-08-29T00:12:12.189Z                 at /home/build/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.47.1/src/task/coop/mod.rs:133:5
2691    2025-08-29T00:12:12.189Z       8: tokio::runtime::scheduler::current_thread::CoreGuard::block_on::{{closure}}::{{closure}}
2692    2025-08-29T00:12:12.189Z                 at /home/build/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.47.1/src/runtime/scheduler/current_thread/mod.rs:742:25
2693    2025-08-29T00:12:12.189Z       9: tokio::runtime::scheduler::current_thread::Context::enter
2694    2025-08-29T00:12:12.189Z                 at /home/build/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.47.1/src/runtime/scheduler/current_thread/mod.rs:432:19
2695    2025-08-29T00:12:12.189Z      10: tokio::runtime::scheduler::current_thread::CoreGuard::block_on::{{closure}}
2696    2025-08-29T00:12:12.189Z                 at /home/build/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.47.1/src/runtime/scheduler/current_thread/mod.rs:741:36
2697    2025-08-29T00:12:12.189Z      11: tokio::runtime::scheduler::current_thread::CoreGuard::enter::{{closure}}
2698    2025-08-29T00:12:12.190Z                 at /home/build/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.47.1/src/runtime/scheduler/current_thread/mod.rs:829:68
2699    2025-08-29T00:12:12.190Z      12: tokio::runtime::context::scoped::Scoped<T>::set
2700    2025-08-29T00:12:12.190Z                 at /home/build/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.47.1/src/runtime/context/scoped.rs:40:9
2701    2025-08-29T00:12:12.190Z      13: tokio::runtime::context::set_scheduler::{{closure}}
2702    2025-08-29T00:12:12.190Z                 at /home/build/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.47.1/src/runtime/context.rs:176:26
2703    2025-08-29T00:12:12.190Z      14: std::thread::local::LocalKey<T>::try_with
2704    2025-08-29T00:12:12.190Z                 at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/thread/local.rs:308:12
2705    2025-08-29T00:12:12.190Z      15: std::thread::local::LocalKey<T>::with
2706    2025-08-29T00:12:12.190Z                 at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/thread/local.rs:272:9
2707    2025-08-29T00:12:12.190Z      16: tokio::runtime::context::set_scheduler
2708    2025-08-29T00:12:12.190Z                 at /home/build/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.47.1/src/runtime/context.rs:176:9
2709    2025-08-29T00:12:12.190Z      17: tokio::runtime::scheduler::current_thread::CoreGuard::enter
2710    2025-08-29T00:12:12.190Z                 at /home/build/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.47.1/src/runtime/scheduler/current_thread/mod.rs:829:27
2711    2025-08-29T00:12:12.190Z      18: tokio::runtime::scheduler::current_thread::CoreGuard::block_on
2712    2025-08-29T00:12:12.190Z                 at /home/build/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.47.1/src/runtime/scheduler/current_thread/mod.rs:729:19

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