r0 = socket$nl_generic(0x10, 0x3, 0x10)
ioctl$sock_SIOCGIFCONF(r0, 0x8912, &(0x7f0000001c00)=@req={0x28, &(0x7f0000001bc0)={'veth0_macvtap\x00', @ifru_ivalue}})