Remove $FreeBSD$: two-line nroff pattern

Remove /^\.\\"\n\.\\"\s*\$FreeBSD\$$\n/

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix

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kern: ether_gen_addr: randomize on default hostuuid, too

Currently, this will still hash the default (all zero) hostuuid and
potentially arrive at a MAC address that has a high chance of collision
i

kern: ether_gen_addr: randomize on default hostuuid, too

Currently, this will still hash the default (all zero) hostuuid and
potentially arrive at a MAC address that has a high chance of collision
if another interface of the same name appears in the same broadcast
domain on another host without a hostuuid, e.g., some virtual machine
setups.

Instead of using the default hostuuid, just treat it as a failure and
generate a random LA unicast MAC address.

Reviewed by: bz, gbe, imp, kbowling, kp
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D29788

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man: document ether_gen_addr(9)

This KPI is used to assign a MAC address to an interface that doesn't
already have one assigned.

Reviewed by: bcr, gnn, imp, kbowling, kp
MFC after: 3 days
Different

man: document ether_gen_addr(9)

This KPI is used to assign a MAC address to an interface that doesn't
already have one assigned.

Reviewed by: bcr, gnn, imp, kbowling, kp
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D29787

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