range2cidr

package module

v0.0.1 Latest Latest Go to latest Published: Feb 26, 2023 License: MIT Imports: 4 Imported by: 1

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De-aggregates an IP address range into a list of network prefixes (CIDR blocks)

Returns a list of prefixes (CIDR blocks) that covers the given IP range.

For example, if:

ipLo = 23.128.1.0
ipHi = 23.128.7.255

then Deaggregate(ipLo, ipHi) will return:

23.128.1.0/24
23.128.2.0/23
23.128.4.0/22

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func BigToV4(nBig *big.Int) netip.Addr

func BigToV6(nBig *big.Int) netip.Addr

func Deaggregate(ipLo, ipHi netip.Addr) ([]netip.Prefix, error)

Returns a list of prefixes (CIDR blocks) that covers the given IP range.

For example, if:

ipLo = 23.128.1.0
ipHi = 23.128.7.255

then Deaggregate(ipLo, ipHi) will return:

23.128.1.0/24
23.128.2.0/23
23.128.4.0/22

func ToBig(addr netip.Addr) *big.Int

func Uint32ToV4(n32 uint32) netip.Addr

func V4ToUint32(ipaddr netip.Addr) (uint32, bool)

type RErr int

const (
	EIpVersionMismatch RErr = iota
	EIpInvalid
)

func (e RErr) Error() string