Date: Tue, 3 Jun 2025 19:24:04 GMT From: Maxim Konovalov <maxim@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 08bc00977348 - main - if_bridge.4: clarify how if_bridge assigns a MAC address Message-ID: <202506031924.553JO4SF093455@gitrepo.freebsd.org>
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The branch main has been updated by maxim: URL: https://cgit.FreeBSD.org/src/commit/?id=08bc0097734824ff436769a95569e32575b51da3 commit 08bc0097734824ff436769a95569e32575b51da3 Author: Maxim Konovalov <maxim@FreeBSD.org> AuthorDate: 2025-06-03 19:19:59 +0000 Commit: Maxim Konovalov <maxim@FreeBSD.org> CommitDate: 2025-06-03 19:23:36 +0000 if_bridge.4: clarify how if_bridge assigns a MAC address PR: 283400 MFC after: 1 week --- share/man/man4/bridge.4 | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/share/man/man4/bridge.4 b/share/man/man4/bridge.4 index 45dea82325bc..7ce734ae87eb 100644 --- a/share/man/man4/bridge.4 +++ b/share/man/man4/bridge.4 @@ -36,7 +36,7 @@ .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE .\" POSSIBILITY OF SUCH DAMAGE. .\" -.Dd May 13, 2025 +.Dd May 28, 2025 .Dt IF_BRIDGE 4 .Os .Sh NAME @@ -79,10 +79,12 @@ command or using the variable in .Xr rc.conf 5 . .Pp -The +When it is created, the .Nm -interface randomly chooses a link (MAC) address in the range reserved for -locally administered addresses when it is created. +interface gets assigned a link (MAC) address in the range of universally +administered addresses reserved for the FreeBSD Foundation by hashing +the host UUID, jail name, and the interface name. +If this fails, a random, locally administered address is generated instead. This address is guaranteed to be unique .Em only across all
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