[Bug 211219] NIC status does not pass into a state of "no carrier" after disconnecting the cable.

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=211219

Julien Cigar <julien at perdition.city> changed:

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                 CC|                            |julien at perdition.city

--- Comment #13 from Julien Cigar <julien at perdition.city> ---
I *think* I experienced something similar on a Soekris 6501 (amd64) recently.
We have two of those boxes which serve as a redundant firewall, dhcp server,
local DNS server, etc..

The DHCP server is configured in "balancing mode", with something like:

load balance max seconds 3;
mclt 1800;
split 128;

Which means (more of less) that client DHCP requests are balanced between the
two. Recently the BACKUP died (still powered on, but unreachable), but for some
unknown reason the clients which got their IPs from the BACKUP DHCP server just
"lost" it after the lease time passed.. and didn't get a new IP from the MASTER
node.. I suspect also that's because the interfaces didn't go into the "no
carrier" state.

This is on 10.2-RELEASE with 82574L cards.

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