replacer

type CtxKey struct{}

type Replacer interface {
	// Replace replaces all variables in string and returns the result
	Replace(string) string

	// Set adds a custom replacement value
	Set(key string, value Value)

	// Get returns the replacement value for key
	Get(key string) string
}

type StringValue string

type Value interface {
	// Get returns the string represenation for the given
	// msg
	Get(msg *dhcpv4.DHCPv4) string
}