From 2fcd3be83ef460c3efdb730beaedd97ff786c824 Mon Sep 17 00:00:00 2001
From: kp <kp@FreeBSD.org>
Date: Sat, 25 Jul 2015 14:06:32 +0000
Subject: [PATCH] Pf can reassemble IPv6 fragments now.

Obtained from: bluhm (OpenBSD)
Sponsored by: Essen FreeBSD Hackathon
---
 share/man/man5/pf.conf.5 | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/share/man/man5/pf.conf.5 b/share/man/man5/pf.conf.5
index 4ed941c40cfc..02cd3414335d 100644
--- a/share/man/man5/pf.conf.5
+++ b/share/man/man5/pf.conf.5
@@ -28,7 +28,7 @@
 .\" ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 .\" POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd June 29, 2012
+.Dd July 25, 2015
 .Dt PF.CONF 5
 .Os
 .Sh NAME
@@ -2381,8 +2381,10 @@ Once this limit is reached, fragments that would have to be cached
 are dropped until other entries time out.
 The timeout value can also be adjusted.
 .Pp
-Currently, only IPv4 fragments are supported and IPv6 fragments
-are blocked unconditionally.
+When forwarding reassembled IPv6 packets, pf refragments them with
+the original maximum fragment size.
+This allows the sender to determine the optimal fragment size by
+path MTU discovery.
 .Sh ANCHORS
 Besides the main ruleset,
 .Xr pfctl 8