Mac / Interface not selectable

[sf666]

I try to post a condensed version ...

The interface to bind to

Code:

en11: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
    options=6407<RXCSUM,TXCSUM,VLAN_MTU,CHANNEL_IO,PARTIAL_CSUM,ZEROINVERT_CSUM>
    inet6 fe80::60:31f8:58e0:48f8%en11 prefixlen 64 secured scopeid 0x7
    inet 10.0.9.139 netmask 0xfffffc00 broadcast 10.0.11.255
    nd6 options=201<PERFORMNUD,DAD>
    status: active