The page refers to vmx0 rather than vxlan0 in its pf.conf
guidance.
Index: vxlan.4
===================================================================
RCS file: /systems/cvs/src/share/man/man4/vxlan.4,v
retrieving revision 1.7
diff -u -p -r1.7 vxlan.4
--- vxlan.4 22 Feb 2018 01:35:04 -0000 1.7
+++ vxlan.4 22 Nov 2018 16:43:37 -0000
@@ -123,9 +123,9 @@ endpoint policies in
.Xr pf.conf 5 :
.Bd -literal -offset indent
table <vxlantep> { 192.168.1.200, 192.168.1.201 }
-block in on vmx0
-pass out on vmx0
-pass in on vmx0 proto udp from <vxlantep> to port vxlan
+block in on vxlan0
+pass out on vxlan0
+pass in on vxlan0 proto udp from <vxlantep> to port vxlan
.Ed
.Pp
The Time-to-Live (TTL) value of the tunnel can be set to 1 or a low
