[Bug 291105] Intel i350 not receiving arp replies

From: <bugzilla-noreply_at_freebsd.org>
Date: Thu, 20 Nov 2025 04:54:56 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=291105

Zhenlei Huang <zlei@FreeBSD.org> changed:

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                 CC|                            |zlei@FreeBSD.org

--- Comment #1 from Zhenlei Huang <zlei@FreeBSD.org> ---
(In reply to Dave Hayes from comment #0)

Does it work good on 14.3-RELEASE or 13.5-RELEASE ?


Can you please try to create an static an ARP entry for (.7) on (.5),
```
# arp -s 172.18.1.7 70:85:c2:c1:19:11
```
and test the connection again ?

Also the ARP entry on (.7) is helpful to diagnose.

> Thus I believe I have observed the reply not getting to the destination (.5)
> machine. Now I have already looked at the switch involved and moved these two to a
> different switch. Same result.

A better way to is connecting the two machines, (.5) and (.7), directly with a
crossover cable. Well a patch cable should also work, as Intel i350 ( and many
NICs ) supports auto MDI-X.

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