var google.golang.org/grpc/internal/resolver/dns.minDNSResRate

2 uses

	google.golang.org/grpc/internal/resolver/dns (current package)
		dns_resolver.go#L78: 	minDNSResRate = 30 * time.Second
		dns_resolver.go#L220: 		t := time.NewTimer(minDNSResRate)