FreeBSD 10.1: Intel dual port 10GbE card (82599EB) second port not present?

[Ryan Stone]

I think that you might be a bit confused about the behaviour.  An ix
port will only be missing if

a) You have a non-Intel SFP+ installed
b) hw.ix.unsupported_sfp=1 is not set in loader.conf

ix ports that have no SFP+ installed do show up in ifconfig