const golang.org/x/sys/unix.IFLA_LINK_NETNSID

one use

	golang.org/x/sys/unix (current package)
		ztypes_linux.go#L1566: 	IFLA_LINK_NETNSID                          = 0x25

The pages are generated with Golds v0.7.6. (GOOS=linux GOARCH=amd64)