<PackageReference Include="NETStandard.Library" Version="2.0.0" />

System.Net.NetworkInformation.IPAddressCollection

namespace System.Net.NetworkInformation { public class IPAddressCollection : ICollection<IPAddress>, IEnumerable<IPAddress>, IEnumerable { public virtual int Count { get; } public virtual bool IsReadOnly { get; } public virtual IPAddress this[int index] { get; } public virtual void Add(IPAddress address); public virtual void Clear(); public virtual bool Contains(IPAddress address); public virtual void CopyTo(IPAddress[] array, int offset); public virtual IEnumerator<IPAddress> GetEnumerator(); public virtual bool Remove(IPAddress address); } }