[Bug 280386] if_bridge throws output errors under load

From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 23 Jul 2024 08:20:58 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=280386

--- Comment #1 from Zhenlei Huang <zlei@FreeBSD.org> ---
(In reply to pascal.guitierrez from comment #0)
The if_bridge(4) promote underlaying errors from bridge members,

```
2108                 if ((err = dst_ifp->if_transmit(dst_ifp, m))) {
2109                         int n;
2110 
2111                         for (m = m0, n = 1; m != NULL; m = m0, n++) {
2112                                 m0 = m->m_nextpkt;
2113                                 m_freem(m);
2114                         }
2115                         if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, n);
2116                         break;
2117                 }
```

may you please also share the statistics for output dropped packets, aka
`netstat -di` ?

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