(0:2) pool4:/sysprog/terry# dmesg | grep ix0
ix0: <Intel(R) PRO/10GbE PCI-Express Network Driver, Version - 3.1.13-k> mem 0xf8e00000-0xf8ffffff,0xf8dfc000-0xf8dfffff irq 24 at device 0.0 on pci3
ix0: Using MSIX interrupts with 9 vectors
ix0: Invalid advertised speed; valid modes are 0x1 through 0x7
ix0: Ethernet address: a0:36:9f:40:22:ac
ix0: PCI Express Bus: Speed 5.0GT/s Width x8
ix0: link state changed to UP
(0:3) pool4:/sysprog/terry# sysctl -a | grep advertise
hw.ix.advertise_speed: 0
dev.ix.0.advertise_speed: 0
(0:4) pool4:/sysprog/terry# uname -a
FreeBSD pool4.glaver.org 10.3-PRERELEASE FreeBSD 10.3-PRERELEASE #0 r296886: Mon Mar 14 22:17:27 EDT 2016     terry@pool4.glaver.org:/usr/obj/usr/src/sys/GENERIC  amd64