dnsutil

func Dedup ¶

func Dedup(m *dns.Msg) *dns.Msg

Dedup de-duplicates a message.

func DuplicateCNAME ¶

func DuplicateCNAME(r *dns.CNAME, records []dns.RR) bool

DuplicateCNAME returns true if r already exists in records.

func ExtractAddressFromReverse ¶

func ExtractAddressFromReverse(reverseName string) string

ExtractAddressFromReverse turns a standard PTR reverse record name into an IP address. This works for ipv4 or ipv6.

54.119.58.176.in-addr.arpa. becomes 176.58.119.54. If the conversion failes the empty string is returned.