Imports github.com/beevik/ntp github.com/u-root/u-root/pkg/boot/stboot github.com/u-root/u-root/pkg/dhclient github.com/u-root/u-root/pkg/recovery github.com/u-root/u-root/pkg/rtc github.com/vishvananda/netlink Standard library imports context crypto/sha256 crypto/tls crypto/x509 encoding/hex encoding/json encoding/pem errors flag fmt io io/ioutil log net net/http net/url os path strconv strings time