socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000003700)={0xffffffffffffffff, <r0=>0xffffffffffffffff})
ioctl$sock_SIOCETHTOOL(r0, 0x8946, &(0x7f00000037c0)={'lo\x00', &(0x7f0000003740)=@ethtool_gfeatures})