git: 26aa0359f2 - main - Add vlan issue to the 13.0 errata doc 'late breaking' section

[Allan Jude]

The branch main has been updated by allanjude:

URL: https://cgit.FreeBSD.org/doc/commit/?id=26aa0359f2a36b57b847d43a7e81bca25f615486

commit 26aa0359f2a36b57b847d43a7e81bca25f615486
Author:     Allan Jude <allanjude at FreeBSD.org>
AuthorDate: 2021-04-15 15:36:37 +0000
Commit:     Allan Jude <allanjude at FreeBSD.org>
CommitDate: 2021-04-16 01:29:32 +0000

    Add vlan issue to the 13.0 errata doc 'late breaking' section
    
    This can be removed once the EN is created
    
    Differential Revision: https://reviews.freebsd.org/D29777
---
 website/content/en/releases/13.0R/errata.adoc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/website/content/en/releases/13.0R/errata.adoc b/website/content/en/releases/13.0R/errata.adoc
index 89768cffd7..aa055fd53b 100644
--- a/website/content/en/releases/13.0R/errata.adoc
+++ b/website/content/en/releases/13.0R/errata.adoc
@@ -67,3 +67,8 @@ No open issues.
 [2021-04-05] A very late issue was discovered in the [.filename]#/usr/bin/dc# program.
 The "P" command does not correctly pop the top of stack value and this will break complex scripts that continue after printing a result.
 The [.filename]#/usr/bin/bc# program is not affected, since it does not depend on dc as its execution engine.
+
+[2021-04-14] An issue was discovered where during an upgrade, when the kernel is new but [.filename]#/sbin/ifconfig# is still the previous version, VLAN interfaces are configured with an invalid ethernet protocol type.
+This causes the VLAN interfaces to send invalid traffic, resulting in non-functional networking.
+Once the updated [.filename]#/sbin/ifconfig# binary is installed, VLANs are created correctly.
+When depending on network access via VLANs during the upgrade, it is suggested to install the new world (run the second `freebsd-upgrade install`) before rebooting.