Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Vendor and type | Models | NetFlow Version | Implementation | Comments |
| --- | --- | --- | --- | --- |
| Cisco IOS-XR routers | CRS , ASR9000 old 12000 | v5, v8, v9 | Software running on line card CPU | Comprehensive support for IPv6 and MPLS |
| Alcatel-Lucent routers | 7750SR | v5, v8, v9, IPFIX | Software running on Central Processor Module | IPv6 or MPLS using IOM3 line cards or better |
| Huawei routers | NE5000E NE40E/X NE80E | v5, v9 | Software running on service cards | Support for IPv6 or MPLS is unknown |
| Enterasys Switches | S-Serie and N-Serie | v5, v9 | Dedicated hardware | IPv6 support is unknown |
| PC and Servers | Linux FreeBSD NetBSD OpenBSD | v5, v9, IPFIX | Software like fprobe, ipt-netflow or pflow | IPv6 support depend on the software used |
| VMware servers | vSphere 5.x | v5 | Software | IPv6 support is unknown |
Question:
What are the comments when vendor and type is enterasys switches?
Answer:
IPv6 support is unknown