Open vSwitch(OVS)版本與Linux內核的關係

不同的Linux kernel需要不同的Open vSwitch版本，
Ubuntu16.04的最新版Linux內核是4.15.2，只能在上面安裝Open vSwitch的2.10和2.11版本。

Open vSwitch內核模塊基於給定版本可以成功構建。需要注意的是這裏的Linux內核版本是上游內核版本，因此在某些情況下，從上游源修改的Linux內核可能無法構建，即使它們屬於受支持的版本。最值得注意的是紅帽企業Linux（RHEL）內核，它們是從上游做了巨大修改的。

Open vSwitch用戶空間也應該與Linux 3.3及更高版本中內置的Linux內核模塊一起使用。
Open vSwitch用戶空間對Linux內核版本不敏感。它應該針對幾乎任何內核構建。

Open vSwitch	Linux kernel
1.4.x	2.6.18 to 3.2
1.5.x	2.6.18 to 3.2
1.6.x	2.6.18 to 3.2
1.7.x	2.6.18 to 3.3
1.8.x	2.6.18 to 3.4
1.9.x	2.6.18 to 3.8
1.10.x	2.6.18 to 3.8
1.11.x	2.6.18 to 3.8
2.0.x	2.6.32 to 3.10
2.1.x	2.6.32 to 3.11
2.3.x	2.6.32 to 3.14
2.4.x	2.6.32 to 4.0
2.5.x	2.6.32 to 4.3
2.6.x	3.10 to 4.7
2.7.x	3.10 to 4.9
2.8.x	3.10 to 4.12
2.9.x	3.10 to 4.13
2.10.x	3.10 to 4.17
2.11.x	3.10 to 4.18

更多資料詳見：Releases — Open vSwitch 2.11.90 documentation

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原文：
What Linux kernel versions does each Open vSwitch release work with?

A: The following table lists the Linux kernel versions against which the given versions of the Open vSwitch kernel module will successfully build. The Linux kernel versions are upstream kernel versions, so Linux kernels modified from the upstream sources may not build in some cases even if they are based on a supported version. This is most notably true of Red Hat Enterprise Linux (RHEL) kernels, which are extensively modified from upstream.

Open vSwitch	Linux kernel
1.4.x	2.6.18 to 3.2
1.5.x	2.6.18 to 3.2
1.6.x	2.6.18 to 3.2
1.7.x	2.6.18 to 3.3
1.8.x	2.6.18 to 3.4
1.9.x	2.6.18 to 3.8
1.10.x	2.6.18 to 3.8
1.11.x	2.6.18 to 3.8
2.0.x	2.6.32 to 3.10
2.1.x	2.6.32 to 3.11
2.3.x	2.6.32 to 3.14
2.4.x	2.6.32 to 4.0
2.5.x	2.6.32 to 4.3
2.6.x	3.10 to 4.7
2.7.x	3.10 to 4.9
2.8.x	3.10 to 4.12
2.9.x	3.10 to 4.13
2.10.x	3.10 to 4.17
2.11.x	3.10 to 4.18

Open vSwitch userspace should also work with the Linux kernel module built into Linux 3.3 and later.

Open vSwitch userspace is not sensitive to the Linux kernel version. It should build against almost any kernel, certainly against 2.6.32 and later.