The branch main has been updated by ronald:
URL:
https://cgit.FreeBSD.org/src/commit/?id=3a2d4a1017e57f19f5a101da15acbdd861d353ae
commit 3a2d4a1017e57f19f5a101da15acbdd861d353ae
Author: Ronald Klop <ron...@freebsd.org>
AuthorDate: 2025-08-06 10:59:33 +0000
Commit: Ronald Klop <ron...@freebsd.org>
CommitDate: 2025-08-06 11:07:14 +0000
Change the default of net.link.epair.ether_gen_addr 0 -> 1.
Now if_epair(4) uses ether_gen_addr(9) to generate a stable MAC.
This feature was committed in 590493c1419092.
Approved by: kp
MFC after: never
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D51157
---
UPDATING | 6 ++++++
sys/net/if_epair.c | 2 +-
2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/UPDATING b/UPDATING
index 60c974198934..1e729624f1e9 100644
--- a/UPDATING
+++ b/UPDATING
@@ -27,6 +27,12 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 15.x IS SLOW:
world, or to merely disable the most expensive debugging functionality
at runtime, run "ln -s 'abort:false,junk:false' /etc/malloc.conf".)
+20250806:
+ if_epair(4) now uses ether_gen_addr(9) to generate a stable MAC
+ address.
+ To keep using the random address, set the loader tunable
+ net.link.epair.ether_gen_addr=0.
+
20250804:
bsdconfig (including sysrc(8)) has moved to the new bsdconfig
package. If you use pkgbase and wish to use bsdconfig, you should
diff --git a/sys/net/if_epair.c b/sys/net/if_epair.c
index 4d35584925a1..a213a84e17db 100644
--- a/sys/net/if_epair.c
+++ b/sys/net/if_epair.c
@@ -102,7 +102,7 @@ SYSCTL_DECL(_net_link);
static SYSCTL_NODE(_net_link, OID_AUTO, epair, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
"Pair of virtual cross-over connected Ethernet-like interfaces");
-static bool use_ether_gen_addr = false;
+static bool use_ether_gen_addr = true;
SYSCTL_BOOL(_net_link_epair, OID_AUTO, ether_gen_addr, CTLFLAG_RWTUN,
&use_ether_gen_addr, false,
"Generate MAC with FreeBSD OUI using ether_gen_addr(9)");
